Intermediate APIs

AdoptAPet provides pet adoption listings including breed, age, location, and photos.

The Cat API provides random cat images, breed data, and voting features.

eBird API from Cornell Lab provides real birding observation data including species sightings, locations, and notable birds by region.

The IUCN Red List API provides conservation status data for over 150,000 animal, plant, and fungal species, including whether a species is Extinct, Endangered, or Least Concern.

The Petfinder API connects you to a database of adoptable pets — dogs, cats, rabbits, birds, and more — from thousands of shelters and rescue organizations across North America.

The Dog API provides hundreds of dog breed images, searchable breed metadata like temperament and life span, and user-uploaded photo voting.

AniDB is one of the oldest and most detailed anime databases, tracking episode titles, staff, characters, and file-level metadata used by media players and subtitle groups.

Danbooru is a large anime image board with a structured tagging system covering thousands of anime artists and characters.

MangaDex provides programmatic access to manga database and community via REST API.

Mangapi is a RapidAPI-hosted service that detects and translates text found in manga panels from one language to another.

AbuseIPDB lets you check whether an IP address has been reported for malicious activity like spam, hacking, or DDoS attacks.

AlienVault Open Threat Exchange (OTX) provides programmatic access to ip/domain/url reputation via REST API.

CAPEsandbox is an open-source malware analysis platform that executes suspicious files in an isolated environment and reports on their behavior.

Google Safe Browsing lets you check any URL against Google's constantly updated lists of phishing sites, malware distributors, and unwanted software.

MalDatabase provides programmatic access to provide malware datasets and threat intelligence feeds via REST API.

MalShare is a free community-driven repository of malware samples that security researchers upload and share for analysis.

MalwareBazaar is a free platform by abuse.ch where security researchers share malware samples along with metadata like file hashes, tags, and threat actor attribution.

Metacert is a link classification and flagging API that checks URLs against curated threat intelligence to identify phishing, adult content, and malicious sites.

NoPhishy (Exerra Phishing Check) checks URLs against a maintained database of known phishing sites and returns whether the link is flagged as a phishing attempt.

Phisherman provides programmatic access to ip/domain/url reputation via REST API.

Scanii is a cloud-based malware scanning API that accepts file uploads and returns a verdict on whether the file contains threats.

URLScan.io scans and screenshots any URL in a sandboxed browser, then returns a detailed report covering the page content, network requests, linked domains, technologies detected, and threat indicators.

VirusTotal scans files and URLs against 70+ antivirus engines in one API call.

Web of Trust scores domains and URLs for trustworthiness and safety based on community ratings.

Améthyste provides programmatic access to generate images for discord users via REST API.

Cooper Hewitt provides programmatic access to smithsonian design museum via REST API.

Europeana searches digitized artworks, books, music, and videos from 3,000+ European cultural institutions.

Harvard Art Museums exposes 250,000+ artworks, artists, and exhibition records with high-res images.

Iconfinder (now served through the Freepik API) gives access to a massive library of icons and vector graphics you can search, filter by style, and download in various formats.

Rijksmuseum provides programmatic access to rijksmuseum data via REST API.

Word Cloud API generates word cloud images from text you provide, with options for colors, fonts, shape masks, and layout.

Auth0 is a developer-friendly identity platform that handles user sign-up, login, social login, and multi-factor authentication so you do not have to build auth from scratch.

GetOTP lets you add one-time password (OTP) verification to your app via SMS, email, or WhatsApp with a few API calls.

Micro User Service provides programmatic access to user management and authentication via REST API.

MojoAuth is a passwordless authentication platform that lets users log in via magic links or one-time codes instead of passwords.

SAWO Labs provides programmatic access to simplify login and improve user experience by integrating passwordless authentication in your app via REST API.

Stytch provides ready-to-use user authentication infrastructure including magic links, OAuth, OTPs, and session management.

Warrant is an authorization API that lets you define and enforce fine-grained access control rules — roles, permissions, and object-level access — without building your own authorization logic.

Bitquery provides GraphQL APIs for querying on-chain data across 40+ blockchains including Ethereum, Solana, and BSC.

Covalent provides programmatic access to multi-blockchain data aggregator platform via REST API.

Etherscan's API gives programmatic access to Ethereum blockchain data — account balances, transaction histories, token transfers, smart contract ABIs, and gas prices.

NOWNodes provides hosted blockchain node access for 50+ cryptocurrencies via a simple API key — no need to run your own full node for Bitcoin, Ethereum, or other chains.

The Graph is a decentralized indexing protocol that lets you query Ethereum and other blockchain networks using GraphQL.

Watchdata provides a simple JSON-RPC and REST gateway to the Ethereum blockchain, giving you account balances, transaction history, and token data without syncing a node.

A Biblia Digital offers a REST API to access multiple Portuguese Bible versions, chapters, and verses in structured JSON format.

The Bhagavad Gita API provides structured access to all 18 chapters and 700 verses with translations from 21+ authors in Sanskrit, English, and Hindi.

API.Bible aggregates over 2,500 Bible versions across 1,600+ languages from the American Bible Society.

Apache Superset's REST API lets you programmatically manage dashboards, charts, datasets, and database connections in your Superset instance.

Charity Search lets you look up verified US non-profit organizations by name, EIN, or keyword.

Clearbit Logo returns a company logo image by domain name — no scraping required.

Instatus API lets you programmatically create and update incidents and maintenance windows on your public status page.

Mailchimp API lets you manage email lists, create campaigns, and track subscriber activity.

Mailjet lets you send transactional and marketing emails via a simple REST API using MJML or HTML templates.

ORB Intelligence provides programmatic access to company lookup via REST API.

Redash is an open-source data visualization and dashboarding tool that exposes a REST API for managing queries, data sources, and dashboards programmatically.

SwiftKanban is a visual project management platform based on Kanban principles, and its API lets you manage cards, workflows, and board configurations programmatically.

Tomba is an email finding and verification service geared toward B2B sales outreach, letting you look up professional email addresses by name and company domain or verify whether an email address is deliverable.

Calendarific is a REST API that returns public holidays for over 230 countries and territories, supporting both Gregorian and non-Gregorian calendars.

Checkiday is a holiday data API covering more than 5,000 national days and observances in the United States, including unofficial holidays like National Pizza Day.

Festivo is a public holidays API covering more than 60 countries with regional subdivision support, providing both national and state/province-level holidays.

Holiday API (holidayapi.com) provides historical and current public holiday data for over 100 countries, dating back to 2015.

Abstract's Public Holidays API delivers structured data about national, regional, and religious holidays for countries worldwide.

ddownload is a file hosting and sharing service that exposes an API for uploading files, checking account stats, and managing stored files programmatically.

Filestack is a file handling API that lets you upload, transform, and deliver files from any source — local disk, URL, cloud storage, or social network.

GoFile is a free file hosting API that lets you upload files of any size without an account and receive a generated download link in return.

Gyazo is a screenshot hosting API that accepts an image upload and returns a permanent shareable URL with associated metadata like capture time and application info.

Imgbb is a free image hosting API that accepts an image via URL, base64 string, or multipart upload and returns a permanent hosted link along with thumbnail variants.

Pastebin's API lets you create, read, and delete pastes — snippets of text or code stored at a shareable URL — programmatically.

Pinata is an IPFS pinning service API that lets you upload files to the InterPlanetary File System and keep them persistently accessible by "pinning" them on Pinata's infrastructure.

Quip's API provides programmatic access to collaborative documents and spreadsheets in Quip (a Salesforce product), letting you read thread content, create new documents, and post messages to document threads.

Storj is a decentralized cloud storage platform that splits, encrypts, and distributes files across thousands of independent nodes worldwide.

Web3 Storage (now operating as Storacha) lets you upload files to a decentralized storage network built on IPFS and Filecoin, receiving a content-addressed CID for each upload.

The Azure Resource Health API lets you query the current and historical health status of individual Azure resources, such as virtual machines, SQL databases, and App Services.

Bitrise is a mobile-first CI/CD platform that automates building, testing, and deploying iOS and Android apps.

CircleCI provides programmatic access to automate the software development process using continuous integration and continuous delivery via REST API.

Codeship is a hosted CI platform (now part of CloudBees) that automatically builds and tests your code on every Git push.

Travis CI is one of the original hosted CI services, tightly integrated with GitHub to automatically run test suites on every push or pull request.

Coinlayer delivers real-time and historical exchange rates for over 385 cryptocurrencies, sourced from major exchanges and updated every 60 seconds on paid plans.

Alchemy Ethereum provides programmatic access to ethereum node-as-a-service provider via REST API.

Binance Spot API provides real-time and historical market data for thousands of cryptocurrency trading pairs on the world's largest crypto exchange by volume.

BitcoinAverage aggregates price data from dozens of global cryptocurrency exchanges to produce weighted average prices for Bitcoin and other digital assets.

Bitfinex is a professional cryptocurrency exchange offering one of the most comprehensive trading APIs for both spot and margin markets.

BitMEX is a derivatives exchange specializing in perpetual swaps and futures contracts for Bitcoin and other cryptocurrencies.

Bittrex provides programmatic access to next generation crypto trading platform via REST API.

Block (formerly block.io) provides a cryptocurrency payment and wallet API that lets developers send and receive Bitcoin and other supported coins programmatically.

Blockchain.com Explorer API provides read access to Bitcoin blockchain data including individual transaction details, block information, and wallet address summaries.

Blockfrost provides a managed API layer for interacting with the Cardano blockchain without running your own node.

Brave NewCoin aggregates real-time and historical price data from over 200 cryptocurrency exchanges to compute market index prices for thousands of assets.

BtcTurk is one of Turkey largest cryptocurrency exchanges, offering a public and authenticated REST API for accessing real-time price data and placing trades.

Bybit provides programmatic access to cryptocurrency data feed and algorithmic trading via REST API.

CoinAPI aggregates market data from hundreds of cryptocurrency exchanges into a single unified REST interface.

The Coinbase API exposes current and historical prices for Bitcoin, Bitcoin Cash, Litecoin, and Ethereum against major fiat currencies.

Coinbase Advanced Trade (formerly Coinbase Pro) provides institutional-grade REST and WebSocket APIs for trading on the Coinbase exchange.

CoinDCX is an Indian cryptocurrency exchange offering REST APIs for market data, trading, and account management.

Coinigy is a multi-exchange cryptocurrency portfolio and charting platform whose API lets you connect to 45+ exchanges through a single authenticated interface.

Coinlib provides programmatic access to crypto currency prices via REST API.

CoinRanking offers a REST API that delivers live price, market cap, and ranking data for thousands of cryptocurrencies.

Coinremitter is a crypto payment gateway API that lets you create invoices, generate deposit addresses, and check real-time coin prices across multiple blockchains.

CryptoMarket exposes the full trading functionality of the Cryptomkt exchange through a REST and WebSocket API, covering order placement, real-time order book data, trade history, and account management.

dYdX is a decentralised perpetual futures exchange, and its API gives developers programmatic access to market data, order books, and — with authentication — order management and account information.

Ethplorer is a free REST API for exploring the Ethereum blockchain, offering detailed information about ERC-20 token holdings, wallet balances, transaction history, and token contract metadata.

EXMO is a UK-based cryptocurrency exchange with a REST API covering public market data (tickers, order books, trade history) as well as authenticated endpoints for placing orders, managing your account, and handling deposits and withdrawals.

FTX was a major cryptocurrency derivatives and spot exchange whose REST and WebSocket APIs provided access to futures, options, and spot markets.

Gate.io is a comprehensive cryptocurrency exchange API offering access to spot, margin, and futures trading data.

Hirak Exchange Rates delivers real-time foreign currency and cryptocurrency exchange rates, covering 162 fiat currencies and 300+ cryptocurrencies updated every five minutes.

Huobi (now HTX) is a major global cryptocurrency exchange API headquartered in Seychelles, offering access to hundreds of spot and futures trading pairs.

icy.tools (now powered by QuickNode) is a GraphQL-based NFT API that provides data on NFT collections, wallet holdings, and historical transaction activity across major blockchains.

Indodax is Indonesia's largest cryptocurrency exchange API, allowing you to trade Bitcoin and dozens of altcoins against the Indonesian Rupiah (IDR).

INFURA provides hosted Ethereum node access via a simple HTTPS API, eliminating the need to run your own full node to interact with the Ethereum blockchain.

Kraken is one of the oldest and most trusted U.S.-regulated cryptocurrency exchanges, offering a robust REST API for accessing real-time market data, account management, and order execution.

KuCoin is a global cryptocurrency trading platform API offering access to hundreds of spot, margin, and futures trading pairs.

Nomics provides programmatic access to historical and realtime cryptocurrency prices and market data via REST API.

NovaDax is a cryptocurrency exchange API that gives access to real-time market data, order book information, and trading management features.

OKEx provides programmatic access to cryptocurrency exchange based in seychelles via REST API.

Poloniex is a US-based digital asset exchange offering API access to real-time market data, order management, and account features.

The Technical Analysis API provides cryptocurrency price data along with pre-calculated technical indicators like RSI, MACD, and moving averages.

VALR is a South African cryptocurrency exchange that offers a comprehensive API for market data, account management, and trading.

WorldCoinIndex provides cryptocurrency price data and market information for a large number of coins and tokens.

Currencylayer provides reliable exchange rate and currency conversion data for over 168 world currencies using an easy-to-use REST API.

Exchangeratesapi.io provides real-time and historical foreign exchange rates for 170+ currencies, returned as JSON.

Fixer is a widely-used currency exchange and conversion API providing real-time, intraday, and historical exchange rates for 170+ currencies.

1Forge provides real-time forex (foreign exchange) market data via a REST API, covering currency pairs, conversion rates, and market status.

Amdoren provides a free currency conversion API supporting over 150 currencies with daily updated exchange rates.

CurrencyFreaks provides current and historical currency exchange rates for 150+ currencies via a REST API.

CurrencyScoop (now CurrencyBeacon) provides real-time and historical exchange rates for 170+ currencies and cryptocurrencies via a REST API.

ExchangeRate-API delivers accurate foreign exchange rates for 160+ currencies, sourced from major financial data providers and updated hourly.

VATlayer is a REST API for validating EU VAT numbers in real time against official EU VIES (VAT Information Exchange System) data, returning company name, address, and registration status.

Lob.com provides a US Address Verification API that validates, standardizes, and geocodes US mailing addresses using USPS data, ensuring mail deliverability and cleaning up address databases.

Smarty's US Autocomplete Pro API provides real-time US address suggestions as users type, returning up to 10 valid USPS-deliverable address candidates per query to reduce data entry errors and speed up checkout flows.

Smarty's US Extract API scans any block of unstructured text — emails, documents, web pages — and extracts all US postal addresses it finds, then validates each one against USPS data for deliverability.

The Smarty US Street Address API validates and enriches US postal addresses in real time, returning standardized components like delivery line, city, state, ZIP+4, and county FIPS code.

ApiFlash provides a REST API that captures full-page or viewport screenshots of any public URL using a headless Chrome browser, returning the image as a PNG, JPEG, or WebP file.

Azure DevOps REST API provides programmatic access to all Azure DevOps services including work items, repositories, pipelines, test plans, and artifact feeds.

Base provides programmatic access to building quick backends via REST API.

Blague.xyz provides programmatic access to la plus grande api de blagues fr/the biggest fr jokes api via REST API.

Blitapp is a screenshot-as-a-service API that lets you capture full-page or viewport screenshots of any web page on a schedule, then automatically sync them to cloud storage like Dropbox or Google Drive.

Blynk Cloud is an IoT platform API that allows you to read and write values to virtual pins on hardware devices (such as Arduino or Raspberry Pi) connected to the Blynk server.

Brainshop.ai provides programmatic access to make a free a.i brain via REST API.

Browshot is a screenshot API that captures web pages rendered in real browsers (Chrome, Firefox) at any screen resolution or as any device type, including mobile and tablet.

The Contentful Images API lets you retrieve, resize, crop, convert format, and apply other transformations to images stored in your Contentful media library by simply appending query parameters to the image URL.

The Databricks REST API lets you programmatically manage clusters, notebooks, jobs, and workspaces on the Databricks platform — a cloud-based analytics and machine learning environment built on Apache Spark.

The Docker Hub API lets you programmatically interact with Docker Hub registries — searching repositories, pulling image metadata, managing tags, and automating image builds.

GeekFlare provides programmatic access to provide numerous capabilities for important testing and monitoring methods for websites via REST API.

GETPing provides programmatic access to trigger an email notification with a simple get request via REST API.

The Ghost Content API provides read-only access to posts, pages, tags, authors, and settings published on a Ghost CMS instance — letting you pull your blog content into any frontend, app, or static site generator.

The GitHub REST API gives you programmatic access to nearly everything on GitHub — repositories, issues, pull requests, commits, users, organizations, GitHub Actions, and more.

Glitterly is an image generation API that lets you create customized graphics, banners, and visual assets programmatically.

Google Firebase provides a suite of backend services for mobile and web applications, including a real-time database, authentication, cloud storage, and cloud messaging, all accessible via REST APIs.

The Google Fonts API provides metadata about all font families hosted on Google Fonts, including available variants, subsets, and file download URLs.

Hasura is a GraphQL and REST API engine that auto-generates a powerful API layer on top of your PostgreSQL, MySQL, or other supported databases with built-in authorization, subscriptions, and remote joins.

Host.io aggregates domain data including DNS records, web technology fingerprints, backlinks, and related domains into a single REST API.

Hunter (hunter.io) provides APIs to find and verify professional email addresses associated with any domain, making it a go-to tool for sales prospecting and lead enrichment.

IBM Text to Speech converts written text into natural-sounding audio using deep neural network models that support multiple languages and voices.

import.io is a web scraping and data extraction API that lets you retrieve structured data from any website or RSS feed programmatically.

IP2WHOIS provides a simple REST API to look up WHOIS registration data for any domain name, including registrar info, creation date, expiry date, and registrant details.

ipfind.io is a geolocation API that returns detailed location data for any IP address or domain name, including country, region, city, timezone, and ASN information.

JSONbin.io is a free cloud-based JSON storage and hosting service that lets you create, read, update, and delete JSON data bins via a simple REST API.

Logs.to provides programmatic access to generate logs via REST API.

macaddress.io resolves any MAC address or OUI (Organizationally Unique Identifier) prefix to the hardware vendor that manufactured the network interface.

Micro DB provides programmatic access to simple database service via REST API.

OneSignal provides programmatic access to self-serve customer engagement solution for push notifications, email, sms & in-app via REST API.

Open PageRank provides a free alternative to Google's original PageRank score for any domain, calculated from the Common Crawl dataset of billions of web pages.

OpenAPIHub is an all-in-one API management platform that hosts, documents, and discovers APIs using the OpenAPI specification.

OpenGraphr is a lightweight API that extracts Open Graph metadata from any publicly accessible URL, returning properties such as title, description, image, and site name in a clean JSON format.

PageCDN exposes a public API to query its CDN library catalog — including JavaScript packages, CSS frameworks, and web fonts — so developers can look up available versions and generate optimized CDN URLs programmatically.

The Postman API provides programmatic access to your Postman workspace — letting you manage collections, environments, mocks, monitors, and API schemas without opening the Postman desktop or web app.

ProxyCrawl (now Crawlbase) is an anti-bot scraping and crawling API that routes requests through rotating residential and datacenter proxies, handles CAPTCHAs automatically, and returns the rendered HTML of JavaScript-heavy pages.

ProxyKingdom provides programmatic access to rotating proxy api that produces a working proxy on every request via REST API.

Pusher Beams is a managed push notification API that enables developers to send reliable push notifications to Android and iOS devices without managing their own FCM/APNs infrastructure.

Random Stuff provides programmatic access to can be used to get ai response, jokes, memes, and much more at lightning-fast speed via REST API.

Rejax provides a reverse AJAX (server-sent events / long-polling) infrastructure as a service, allowing server-side applications to push real-time updates to connected web clients without those clients needing to constantly poll your backend.

SavePage.io provides a RESTful API for capturing full-page screenshots of any desktop or mobile website.

ScrapeNinja is a web scraping API that uses real Chrome browser fingerprints and residential proxies to bypass anti-bot protections.

ScraperApi is a web scraping infrastructure service that handles proxy rotation, browser rendering, and CAPTCHA solving so developers can extract data from websites with a simple GET request.

scraperBox provides programmatic access to undetectable web scraping api via REST API.

Scrapestack is a real-time web scraping and proxy REST API that routes requests through a global pool of residential and datacenter proxies.

ScrapingAnt is a headless Chrome-based web scraping API that renders JavaScript-heavy pages and rotates proxies automatically.

ScrapingDog is a proxy-based web scraping API that handles IP rotation, CAPTCHAs, and JavaScript rendering to help developers reliably extract data from websites.

AbstractAPI's Website Screenshot API lets developers programmatically capture full-page or viewport screenshots of any website URL and receive the image directly in the response.

ScreenshotAPI.net is a developer-friendly API for generating pixel-perfect screenshots of any website, supporting custom viewport sizes, full-page capture, and mobile device emulation.

serpstack delivers real-time Google Search results through a simple REST API, returning organic results, ads, featured snippets, and more.

Sheetsu (now SheetDB) lets you turn any Google Spreadsheet into a REST API with full CRUD support.

Supportivekoala is an API that auto-generates custom images by filling in templates with dynamic text or data, returning a ready-to-use image URL.

Tyk provides programmatic access to api and service management platform via REST API.

WebScraping.AI is a web scraping API that handles JavaScript rendering, proxy rotation, and CAPTCHA bypassing automatically, so you get clean HTML or text from any webpage with a single request.

ZenRows is a web scraping API that automatically bypasses anti-bot protections, CAPTCHAs, and IP bans so you can extract data from any website.

Collins Dictionary API gives developers access to comprehensive bilingual dictionary and thesaurus data for multiple language pairs, including English, Spanish, French, and more.

Lingua Robot is a dictionary API that provides word definitions, pronunciations, synonyms, antonyms, and related forms for English words via a clean JSON REST interface.

Merriam-Webster's Dictionary API provides authoritative English dictionary and thesaurus data from one of the most trusted publishers in the United States.

OwlBot provides programmatic access to definitions with example sentence and photo if available via REST API.

The Oxford Dictionaries API provides access to the Oxford English Dictionary's extensive lexical data, including definitions, pronunciations, etymologies, and usage examples.

Synonyms.com API provides synonym, antonym, and thesaurus data for English words, making it useful for writing assistants, word games, and vocabulary tools.

Wordnik is a comprehensive English dictionary API offering definitions, pronunciations, example sentences, related words, and frequency data sourced from a large corpus of text.

Words API gives you instant access to definitions, synonyms, antonyms, examples, and more for over 150,000 English words via a simple REST interface.

Airtable's REST API lets you read, create, update, and delete records in any Airtable base as if it were a flexible database.

Api2Convert is an online file conversion API that supports converting between hundreds of formats including documents, images, audio, and video files.

The pdflayer API by apilayer converts any HTML snippet or public URL into a high-quality PDF file with a simple GET or POST request.

The Asana API gives you full programmatic access to your Asana workspace — tasks, projects, users, comments, and more.

Clockify is a free time-tracking API that lets you manage workspaces, projects, clients, and time entries programmatically.

CloudConvert is a powerful file conversion API that supports over 200 formats across documents, images, audio, video, spreadsheets, and more.

The Cloudmersive Convert API lets you convert documents, images, and web pages between formats — including Word to PDF, HTML to image, and more — with a simple REST call.

Code::Stats is a free API that tracks programming activity by language, recording XP points earned through coding.

CraftMyPDF lets you generate PDF documents programmatically from reusable templates using a drag-and-drop editor.

Flowdash is a no-code workflow automation platform that also exposes a REST API for triggering and managing business workflows programmatically.

Html2PDF is a REST API that converts HTML markup or any public web URL into a downloadable PDF document.

iLovePDF API provides a full suite of PDF operations including conversion, merging, splitting, compressing, and adding page numbers, all accessible through a simple REST interface.

Mercury provides programmatic access to web parser via REST API.

Monday provides programmatic access to programmatically access and update data inside a monday.com account via REST API.

PandaDoc API lets you create, send, and track documents and e-signature requests programmatically.

PrexView converts structured XML or JSON data into formatted PDF documents, HTML pages, or images using reusable design templates.

Restpack is a powerful API suite that lets you capture screenshots of websites, convert HTML to PDF, and extract content from web pages.

The Smart Image Enhancement API uses AI super-resolution algorithms to upscale and enhance images, adding fine details that make low-resolution images look crisp at larger sizes.

mailboxlayer is an email validation API that checks whether an email address is syntactically correct, has a valid MX record, and is not a disposable address.

Cloudmersive Validate is a comprehensive validation API that can verify email addresses, phone numbers, VAT numbers, and domain names in a single platform.

Abstract API Email Validation checks whether an email address is deliverable, properly formatted, and not from a disposable or spam-trap domain.

ImprovMX is an email forwarding service with a REST API that lets you programmatically manage domains and forwarding rules — mapping email aliases to real destination addresses.

MailboxValidator performs multi-layered email address validation including syntax checking, DNS/MX record lookup, disposable email detection, and SMTP mailbox verification to help improve email list deliverability.

Mailtrap provides programmatic access to a service for the safe testing of emails sent from the development and staging environments via REST API.

Sendinblue provides programmatic access to a service that provides solutions relating to marketing and/or transactional email and/or sms via REST API.

Verifier provides programmatic access to verifies that a given email is real via REST API.

BreezoMeter Pollen API (now part of Google Maps Platform) provides daily pollen forecast data including pollen type, index values, and risk levels for a specific geographic location.

Carbon Interface API calculates estimated CO2 emissions for common activities such as electricity usage, flights, vehicle travel, and shipping.

Climatiq is an API for calculating carbon emissions and environmental footprint across a wide range of activities including travel, energy use, and shipping.

Cloverly provides programmatic access to api calculates the impact of common carbon-intensive activities in real time via REST API.

IQAir API provides real-time air quality index (AQI) data and weather conditions for cities and stations worldwide, powered by the IQAir sensor network.

OpenAQ is an open-source platform providing access to air quality data aggregated from thousands of government and research-grade monitoring stations worldwide.

PM25.in is a Chinese air quality API providing real-time PM2.5, AQI, and related pollution data for cities across China.

PVWatts is a NREL (National Renewable Energy Laboratory) API that estimates the energy production of grid-connected photovoltaic (solar panel) systems anywhere in the world.

Srp Energy API provides hourly electricity usage data for customers of SRP (Salt River Project), a utility provider in Arizona, USA.

The SeatGeek API allows you to search for live events, venues, and performers across sports, concerts, and theater.

The Ticketmaster API provides access to a massive catalog of live events, artists, and venues worldwide, including detailed ticketing data.

Marketstack is a real-time, intraday, and historical stock market data API covering 70 plus global exchanges.

Aletheia provides financial data including insider trading filings, earnings call transcripts, and financial statements for US-listed companies.

Alpaca provides real-time and historical market data for US equities and ETFs, along with commission-free trading capabilities.

Alpha Vantage delivers free real-time and historical stock, forex, and cryptocurrency data through a simple REST API.

Bank Data API lets you instantly validate IBAN and SWIFT/BIC numbers to make sure bank account details are correct before processing a payment.

Billplz is a payment platform API focused on the Malaysian market that lets you create bills and collect payments online.

Boleto.Cloud is a Brazilian payment API that lets you generate boletos — the popular Brazilian bank slip payment method used widely for bills and online purchases.

Citi's partner API provides access to Citigroup banking account and statement data, enabling developers to build financial apps that read account balances, transactions, and statements on behalf of authorized users.

Finage is a financial data provider offering real-time and historical data for stocks, forex currencies, cryptocurrencies, indices, and ETFs through a single API.

Financial Modeling Prep (FMP) provides a comprehensive API for real-time and historical stock market data, including income statements, balance sheets, stock prices, earnings, and more for thousands of companies.

Finnhub is a popular financial API offering real-time stock quotes, company fundamentals, news, forex rates, and cryptocurrency data through both REST and WebSocket connections.

FRED provides programmatic access to economic data from the federal reserve bank of st.

Hotstoks provides programmatic access to stock market data powered by sql via REST API.

IEX Cloud provides programmatic access to realtime & historical stock and market data via REST API.

IG is a financial data API providing access to spreadbetting and CFD (Contract for Difference) market data.

Intrinio is a financial data platform that provides a wide range of data feeds including stock prices, fundamentals, options, and economic indicators.

Klarna provides programmatic access to klarna payment and shopping service via REST API.

MercadoPago is a leading payment platform in Latin America, and its API lets you integrate payment processing, refunds, and subscription billing into your app.

Mono is an African open banking API that lets you connect to users bank accounts to access transaction history, balances, and identity data.

Moov is a modern payments infrastructure API that makes it straightforward for platforms to send, receive, and store money.

Nordigen provides programmatic access to connect to bank accounts using official bank apis and get raw transaction data via REST API.

OpenFIGI is a free API from Bloomberg that lets you look up financial instrument identifiers (FIGIs) for equities, indices, futures, and options.

Polygon.io is a comprehensive market data API providing real-time and historical stock, forex, and cryptocurrency data.

Real Time Finance is a WebSocket API that streams live stock prices, trade data, and market events directly to your application with minimal latency.

SmartAPI by Angel Broking is an Indian stock brokerage API that lets developers build automated trading systems, portfolio trackers, and order management tools for the NSE and BSE markets.

StockData.org provides real-time, intraday, and historical stock market data along with financial news and sentiment analysis through a simple REST API.

Styvio provides real-time and historical stock price data combined with sentiment analysis based on social media and news signals.

Tax Data API by APILayer lets you instantly validate VAT numbers and retrieve tax rate information for countries around the world.

Twelve Data provides real-time and historical stock, forex, cryptocurrency, and ETF market data through a clean and well-documented REST API.

The VAT Validation API by Abstract API lets you check whether a VAT number is valid and look up current VAT rates for countries in the EU and beyond.

Yahoo Finance provides unofficial access to stock quotes, historical prices, currency exchange rates, and cryptocurrency data through community-maintained libraries and endpoints.

The Chomp API provides detailed nutritional data for millions of grocery products and restaurant menu items, including macros, ingredients, and allergen flags.

The Edamam Nutrition Analysis API parses natural-language food descriptions such as "1 cup of oatmeal" or "200g chicken breast" and returns detailed nutritional breakdowns including calories, macros, vitamins, and minerals.

The Edamam Recipe Search API lets you search a database of over 2 million recipes filtered by ingredients, diet labels such as vegan or keto, meal type, and cuisine.

The Kroger API gives developers access to product catalog data, pricing, store locations, and promotions from one of the largest US grocery chains.

The LCBO API provides access to the Liquor Control Board of Ontario product catalog, including wines, spirits, and beers sold in Ontario, Canada.

Spoonacular is a comprehensive food and recipe API that provides recipe search, ingredient data, nutritional analysis, and meal planning features.

Systembolaget provides programmatic access to govornment owned liqour store in sweden via REST API.

The Tasty API, available on RapidAPI, provides access to recipe data, meal plans, ingredient lists, and cooking tips from the popular BuzzFeed Tasty platform.

TheCocktailDB is a free cocktail recipe database with thousands of drinks from around the world.

TheMealDB is a free meal recipe database covering thousands of dishes from global cuisines.

The What's on the Menu?

Zestful is an ingredient parsing API that converts raw recipe ingredient strings like '2 cups all-purpose flour' into structured data with quantity, unit, and ingredient name.

The Brawl Stars API provides official game data including player profiles, club info, battle logs, and brawler statistics.

The Clash of Clans API provides official data on players, clans, clan wars, leagues, and rankings from Supercell's hit mobile strategy game.

The Clash Royale API offers official data on players, clans, cards, battles, and tournaments from Supercell's card-battle mobile game.

The Destiny The Game API (Bungie Platform API) gives developers access to data from the popular Destiny franchise, including player stats, character info, and game content.

The Dota 2 API (OpenDota) provides detailed match history, hero statistics, player rankings, and game data for the popular MOBA game Dota 2.

The Fortnite Tracker API lets you retrieve player statistics, match history, and leaderboard data for Fortnite.

Giant Bomb API offers one of the most comprehensive video game databases available, covering games, characters, companies, releases, and reviews from thousands of titles.

The Guild Wars 2 API provides extensive access to in-game data including items, skills, achievements, characters, and trading post prices.

The Halo API gives you access to official stats and metadata for Halo 5 and Halo Wars 2, including player profiles, match history, and game metadata.

Hearthstone API provides detailed card data for the Hearthstone collectible card game, including card stats, artwork, and set information.

The Humble Bundle API (via RapidAPI) lets you fetch information about current and recent Humble Bundle deals, including game titles, prices, and bundle contents.

Humor API provides jokes, memes, and humorous content across dozens of categories, making it easy to add comedy to apps, bots, and games.

Hypixel API gives you access to player statistics, game data, and guild information for the Hypixel Minecraft network, one of the largest Minecraft servers in the world.

IGDB.com API is a comprehensive video game database with over 200,000 games, covering metadata like genres, release dates, ratings, screenshots, and more.

Jokes One is a REST API offering a curated "Joke of the Day" and a large searchable collection of jokes organized by categories.

The Marvel Comics API gives you access to over 70 years of Marvel character, comic, story, and creator data.

The mod.io API is a cross-platform modding platform that lets you access, upload, and manage game mods programmatically.

Mojang provides programmatic access to mojang / minecraft api via REST API.

PandaScore is a comprehensive esports data API providing live and historical match results, team rosters, tournament brackets, and player stats across games like League of Legends, CS2, and Dota 2.

The PUBG API provides access to in-game data for PlayerUnknown's Battlegrounds, including player stats, match history, telemetry, and leaderboards.

QuizAPI.io provides a large collection of programming and technology quiz questions with multiple-choice answers, making it perfect for building coding quizzes and learning apps.

RAWG.io is a massive video game database API with over 500,000 games across 50 platforms, including PC, consoles, and mobile.

The Riot Games API gives developers access to League of Legends player data, match history, champion stats, and ranked information.

The Steam Web API lets developers access public data from the Steam platform, including player profiles, game ownership, achievement stats, and the store catalog.

The SuperHero API aggregates data on thousands of superheroes and villains from Marvel, DC, and other universes in a single REST API.

Tebex is a monetisation platform for game servers, and its API lets you retrieve information about packages, purchases, and player data for your game store.

Wargaming.net's official API gives access to player statistics, vehicle data, and clan information for World of Tanks, World of Warships, and other Wargaming titles.

IPstack is a real-time IP geolocation API that lets you look up the geographic location of any IP address, including country, city, latitude, and longitude.

ipapi.com provides a fast REST API to geolocate any IP address and retrieve location data like country, city, timezone, and ISP in JSON format.

Actinia Grass GIS provides programmatic access to actinia is an open source rest api for geographical data that uses grass gis via REST API.

Apiip is an IP geolocation API that returns detailed location data including city, country, timezone, and currency for any IP address.

Battuta is a hierarchical location API that lets you browse countries, regions, and cities in a cascade, making it easy to build location pickers with dependent dropdowns.

BigDataCloud offers a fast and highly accurate IP geolocation API that also includes network security checks and a confidence area metric to indicate how precise the location is.

Bing Maps (now Azure Maps) is Microsoft's mapping platform that lets you geocode addresses, reverse geocode coordinates, get routes, and embed interactive maps in your applications.

CountryStateCity provides a comprehensive API with world countries, states, regions, and cities data in multiple formats including JSON, SQL, and CSV.

Geoapify is a powerful geocoding API that converts addresses to coordinates (forward geocoding) and coordinates to addresses (reverse geocoding), with address autocomplete support.

Geocod.io is a US and Canada focused geocoding API that converts addresses to coordinates and vice versa, with support for bulk geocoding of thousands of addresses at once.

Geocodify.com lets you convert addresses into geographic coordinates (latitude/longitude) and vice versa, covering locations worldwide.

GeoDataSource lets you look up city names from latitude and longitude coordinates, making it simple to reverse-geocode a GPS position into a readable location.

GeoDB Cities provides detailed data on cities, regions, and countries worldwide, including population figures, time zones, and geographic coordinates.

Google Earth Engine is a powerful cloud platform for analyzing vast amounts of satellite imagery and geospatial data at planetary scale.

Google Maps API lets you embed and customize Google Maps in your app, enabling features like geocoding, directions, and place searches.

HERE Maps API offers powerful mapping, routing, and geocoding services as an alternative to Google Maps.

Hirak IP to Country provides programmatic access to ip to location with country code, currency code & currency name, fast response, unlimited requests via REST API.

Abstract IP Geolocation API converts any IP address into detailed location data including country, city, timezone, and currency information.

IP2Location is a geolocation web service that maps any IP address to its physical location and network information.

IP2Proxy detects whether an IP address is being used through a proxy, VPN, Tor exit node, or other anonymizer service.

ipgeolocation provides accurate IP-to-location data including country, city, time zone, currency, and security flags through a straightforward REST API.

IPInfoDB offers free geolocation lookups that map IP addresses to country, region, city, and time zone data.

ipstack is a powerful IP geolocation API that returns location, language, currency, timezone, and security information for any IP address in real time.

Kakao Maps API provides comprehensive mapping services for South Korea, including map display, address search, route calculation, and keyword-based place search.

keycdn IP Location Finder is a lightweight REST API that returns geolocation details for any IP address in JSON format.

LocationIQ is a flexible geocoding API that converts addresses to coordinates (forward geocoding) and coordinates back to addresses (reverse geocoding), plus supports batch lookups.

Longdo Map is a Thai mapping API that provides detailed maps, places, and location data for Thailand.

Mapbox is a powerful mapping platform that lets you create beautiful, customizable digital maps for web and mobile apps.

MapQuest is a mapping and navigation API that provides geocoding, directions, and map display services.

OneMap Singapore is the official mapping API provided by the Singapore Land Authority for Singapore addresses and geographic data.

OpenCage is a geocoding API that converts addresses into geographic coordinates (and vice versa) using open data sources including OpenStreetMap.

openrouteservice is a free, open-source routing API powered by OpenStreetMap data that provides directions, travel time, and distance for multiple transport modes including car, bike, and walking.

positionstack is a geocoding API that converts street addresses into latitude and longitude coordinates (forward geocoding) and vice versa (reverse geocoding).

RoadGoat Cities provides programmatic access to cities content & photos api via REST API.

SpotSense provides programmatic access to add location based interactions to your mobile app via REST API.

Telize is an IP geolocation API that returns detailed location and network information for any IP address, including country, city, coordinates, timezone, and ISP.

TomTom offers a comprehensive suite of mapping APIs covering maps, routing, traffic, and place search for developers.

Uebermaps lets you discover, create, and share custom maps with friends through a simple REST API.

The US ZipCode API by Smarty validates US zip codes and returns detailed geographic data such as city, state, county, and lat/lng coordinates.

Utah AGRC (Automated Geographic Reference Center) provides a free geocoding API specifically for Utah addresses, converting street addresses into geographic coordinates.

What3Words divides the world into 3m x 3m squares and assigns each a unique three-word address, making precise location sharing simple and memorable.

Yandex.Maps Geocoder converts addresses into geographic coordinates and vice versa, with strong coverage for Russia and CIS countries.

ZipCodeAPI provides US zip code data including distances between zip codes, all zip codes within a given radius, and city and state lookups.

City, Nantes Open Data gives developers access to datasets published by Nantes Métropole in France, covering transport, environment, and urban planning.

Code.gov is the U.S.

Data.gov is the central repository for open data published by U.S.

Deutscher Bundestag DIP (Dokumentations- und Informationssystem) provides read access to official German Bundestag data including parliamentary activities, printed materials, persons, and procedures.

The FEC (Federal Election Commission) API lets you explore campaign finance data from US federal elections, including donations, candidate financials, and committee information.

Gun Policy provides programmatic access to international firearm injury prevention and policy via REST API.

The National Park Service API provides data about US national parks, including park descriptions, alerts, visitor centers, campgrounds, and events.

Open Government, Estonia provides programmatic access to estonia government open data via REST API.

Open Government, France provides programmatic access to french government open data via REST API.

The Open Government India API (data.gov.in) provides access to thousands of datasets published by Indian government ministries and departments, covering agriculture, health, education, finance, and more.

Open Government, Korea provides programmatic access to korea government open data via REST API.

The Open Government Luxembourg API provides access to official Luxembourgish government open data through the data.public.lu portal, which runs on a CKAN platform.

The New South Wales (NSW) Government Open Data API provides access to a wide range of public datasets from Australia's most populous state, including transport, environment, and community data.

Thailand Open Government Data API (data.go.th) provides access to datasets published by Thai government agencies on topics like economy, environment, health, and infrastructure.

USA.gov provides programmatic access to authoritative information on u.s.

The CMS.gov Provider Data API gives access to Medicare and healthcare provider quality data from the Centers for Medicare and Medicaid Services.

FoodData Central is the USDA's authoritative nutritional database API, giving access to detailed nutrient profiles for hundreds of thousands of foods including branded products, raw ingredients, and restaurant items.

Infermedica is an AI-powered health API that analyzes symptom descriptions in plain text and suggests possible conditions or next steps.

Lexigram is a clinical NLP API that reads medical text and identifies clinical concepts like diagnoses, medications, and procedures using standardized ontologies.

Nutritionix gives you access to the world's largest verified nutrition database, allowing you to look up calories, macronutrients, and micronutrients for branded and restaurant foods.

openFDA provides free public access to FDA datasets covering drug adverse events, product recalls, medical device reports, and food safety alerts.

Adzuna is a job board aggregator API that lets you search millions of job listings from across the web in one place.

Careerjet is a global job search engine API that aggregates listings from thousands of job sites and company career pages worldwide.

Findwork is a job board API focused on developer and tech roles, aggregating listings from top tech companies and startups.

Jobs2Careers is a job aggregator API that collects listings from thousands of job boards and employer sites across the US and beyond.

Jooble is a large international job search engine API that aggregates listings from over 140,000 sources worldwide.

Juju is a job search engine API that aggregates job listings from employer career pages and major job boards.

Reed is a UK-based job board API that lets you search and retrieve job listings programmatically.

The Muse API provides access to job listings and in-depth company profiles including culture, photos, and employee perspectives.

USAJOBS is the official US federal government job portal, and its API provides programmatic access to thousands of government job listings.

WhatJobs is a global job search engine API that aggregates listings from multiple sources across many countries.

ZipRecruiter provides an API for its popular job search platform, letting developers access millions of active job listings across the US and Canada.

AI For Thai is a free collection of AI-powered APIs specifically designed for the Thai language, covering NLP tasks like word segmentation, sentiment analysis, and text-to-speech.

Cloudmersive Image Recognition API offers a suite of image processing capabilities including captioning, face detection, NSFW content classification, and object recognition.

Dialogflow is Google's Natural Language Processing platform that lets you build conversational interfaces like chatbots and voice assistants.

Hirak FaceAPI provides face detection and recognition capabilities including age estimation and gender classification from images.

Imagga is an image recognition API that can automatically tag images with descriptive labels, perform visual search, and detect inappropriate (NSFW) content.

Inferdo provides a suite of Computer Vision services through RapidAPI, including facial detection, image labeling, and NSFW classification.

IPS Online provides programmatic access to face and license plate anonymization via REST API.

Irisnet is a real-time content moderation API that automatically detects and can blur or block unwanted visual content such as nudity, violence, or other policy-violating material.

Keen IO is a data analytics API that lets you record custom events and then query and visualize that data without setting up your own database or analytics infrastructure.

Machinetutors provides programmatic access to ai solutions: video/image classification & tagging, nsfw, icon/image/audio search, nlp via REST API.

MessengerX.io is a free API for building personalized, machine-learning-powered chat applications that developers can also monetize.

NLP Cloud is an API that provides a wide range of natural language processing features including named entity recognition, sentiment analysis, text classification, and summarization using state-of-the-art models like spaCy and Hugging Face transformers.

Perspective is a free NLP API from Jigsaw (Google) that scores text for toxic, obscene, insulting, or threatening content, returning a probability between 0 and 1 for each attribute.

Roboflow Universe gives you access to thousands of pre-trained computer vision models and datasets through a simple REST API.

SkyBiometry is a cloud API that detects faces in photos and can recognize or group them across multiple images.

Time Door is an API that applies statistical and machine learning models to your time series data to detect trends, seasonality, and anomalies.

Unplugg is a forecasting API that predicts future values from your historical time series data using machine learning.

WolframAlpha provides programmatic access to provides specific answers to questions using data and algorithms via REST API.

AI Mastering is an API that automatically applies professional audio mastering to your music files using AI algorithms.

Freesound is a collaborative database of Creative Commons licensed audio samples and field recordings.

KSoft.Si Lyrics API provides instant lyrics lookup for songs by title and artist name.

Last.fm is a music discovery and social listening platform with over 15 years of scrobbling data.

Musixmatch provides access to one of the largest lyrics databases in the world, covering millions of songs.

Napster provides programmatic access to music via REST API.

Phish.in is a community-maintained archive of live recordings from the band Phish, spanning decades of concerts.

Songkick provides concert and live music event data including tour dates, venues, and artist lineups.

Songlink (also known as Odesli) converts a music link from one streaming platform into links for all major platforms, including Spotify, Apple Music, YouTube, and more.

The Spotify Web API is one of the most popular music APIs, giving you access to Spotify's full catalog of songs, albums, artists, and playlists.

TasteDive is a recommendation API that suggests similar artists, movies, TV shows, books, and games based on what you already enjoy.

TheAudioDB provides programmatic access to music via REST API.

Vagalume provides programmatic access to crowdsourced lyrics and music knowledge via REST API.

Mediastack is a simple REST API that delivers live and historical news articles from thousands of global sources.

The Associated Press Developer API gives you programmatic access to AP news content and metadata, one of the most trusted wire services in the world.

Currents API delivers the latest news from thousands of sources, blogs, and online forums in real time.

GNews is a news search API that aggregates articles from thousands of sources worldwide and lets you filter by keyword, language, country, and topic.

MarketAux delivers real-time financial news with sentiment analysis, ticker tagging, and market statistics in a clean JSON format.

The New York Times API gives developers access to articles, book reviews, movie reviews, bestseller lists, and more from one of the most prestigious news organizations in the world.

News API gives you access to breaking news headlines and articles from thousands of global news sources and blogs.

NewsData.io provides live and breaking news headlines sourced from thousands of reputable news outlets around the world.

NewsX is a breaking news API available through RapidAPI that provides up-to-date headlines enhanced with machine-learning-powered summaries.

The Guardian Content API gives you open access to all articles, multimedia, and structured data published by The Guardian newspaper, organized by tags and sections.

The Old Reader API provides programmatic access to The Old Reader, a classic RSS feed reader service.

TheNewsAPI is a news aggregation API that delivers headlines, top stories, and live news in JSON format from thousands of sources worldwide.

Trove is an API provided by the National Library of Australia that allows you to search through millions of digitised historical newspapers and other cultural collections.

The Black History Facts API gives you access to one of the largest databases of Black history facts on the web.

CARTO is a geospatial platform API that provides location intelligence and data analysis tools for mapping and prediction.

Enigma Public is a platform that aggregates a broad collection of public datasets from government and other sources into a single searchable API.

The Joshua Project API provides data on people groups around the world, focusing on those with the fewest followers of Christ for missionary research purposes.

Kaggle provides programmatic access to create and interact with datasets, notebooks, and connect with kaggle via REST API.

LinkPreview is an API that fetches a summary of any URL including its title, description, and preview image in JSON format.

Nasdaq Data Link (formerly Quandl) gives you access to a vast library of financial, economic, and alternative datasets including stock prices, futures, and macro indicators.

OpenCorporates is the world's largest open database of companies, covering corporate entities and directors across more than 130 countries.

PeakMetrics is a media intelligence API available via RapidAPI that aggregates news articles and public datasets for tracking narratives, mentions, and trends across online media.

The Recreation Information Database (RIDB) API gives you access to data about federal recreational areas, campgrounds, permits, historic sites, and visitor facilities across the United States.

Scoop.it is a content curation platform that lets you discover, organize, and share web content around specific topics.

The UPC Database API lets you look up product information by scanning or entering a barcode number, returning details like product name, description, and category from a database of over 1.5 million items worldwide.

The TIPO (Taiwan Intellectual Property Office) API provides access to Taiwan's patent search system, allowing you to retrieve patent data, search by keyword, and look up inventor or applicant information for Taiwanese patents.

The Dev.to (Forem) API lets you read and interact with articles, comments, tags, and user profiles from the Dev.to developer community.

FavQs.com is a social quotes platform whose API lets you fetch, search, and favorite quotes from a large community-curated collection.

The Udemy Instructor API lets course instructors programmatically access data about their own courses, students, and revenue on Udemy.

Numverify is a phone number validation API that checks whether a phone number is valid and returns carrier, location, and line type information for numbers from over 200 countries.

Cloudmersive Validate API provides international phone number validation with detailed parsing, including country code detection, formatting, and line type identification.

Phone Validation by Abstract API lets you verify phone numbers from countries around the world with a single API call.

Veriphone is a phone number validation API that also returns carrier and line-type details for numbers worldwide.

APITemplate.io lets you generate images and PDFs on the fly by filling data into pre-designed templates.

Bruzu provides programmatic access to image generation with query string via REST API.

CheetahO is an image optimization API that compresses and resizes photos without visible quality loss.

Dagpi is a free image manipulation API that applies filters, effects, and fun transformations to images with a single HTTP request.

Duply provides programmatic access to generate, edit, scale and manage images and videos smarter & faster via REST API.

DynaPictures is an API for generating large batches of personalized images from reusable templates.

The Giphy API gives you access to the world's largest GIF library, letting you search, trend, and embed animated GIFs in your applications.

The Image Upload API from APILayer lets you upload, store, and optimize images in the cloud via a simple REST interface.

ObjectCut API uses AI to automatically remove image backgrounds and cut out objects with high precision, returning a PNG with a transparent background.

Pexels API provides free access to a large library of high-quality stock photos and videos contributed by talented creators, all under the Pexels license.

PhotoRoom API uses AI to remove backgrounds from product and portrait photos, producing clean PNG images with transparent backgrounds suitable for e-commerce and marketing.

Pixabay API gives you free access to over 4 million high-quality photos, illustrations, vectors, and videos released under the Pixabay license, which allows commercial use without attribution.

Remove.bg is an API that automatically removes the background from any photo using AI.

Sirv is an image management API that lets you upload, optimize, resize, and serve images from a CDN through simple URL parameters.

Wallhaven is a curated wallpaper community, and its API lets you search and browse its large collection of high-resolution wallpapers by keyword, category, and resolution.

Codeforces is a competitive programming platform, and its API lets you retrieve contest data, user statistics, problem sets, and submission results programmatically.

HackerEarth is a developer assessment platform, and its API lets you compile and execute code in over 30 programming languages programmatically.

Judge0 CE is an open-source online code execution API that compiles and runs code in over 60 programming languages.

Mintlify is a documentation platform API that lets you programmatically generate and manage beautiful docs for your code projects.

CORE provides access to millions of open-access research papers from repositories and journals worldwide.

The Materials Platform for Data Science (MPDS) API provides access to curated experimental data about materials — things like crystal structures, physical properties, and phase diagrams.

The Numbers API from math.tools provides facts, trivia, and mathematical data about numbers — including the number of the day, random numbers, and detailed number properties.

Application Environment Verification (AEV) is an Android library and API from FingerprintJS that checks whether a user device is safe to use.

BinaryEdge is a cybersecurity platform that continuously scans the entire internet and exposes the results through its API.

Botd is an open-source JavaScript library and API from FingerprintJS that detects whether a web visitor is a bot or a real human browser.

The Bugcrowd API gives you programmatic access to your organization's bug bounty program data, including submissions, rewards, and researcher profiles.

Censys is an internet-wide scanning platform that lets you search for any internet-connected host, device, or certificate using its REST API.

Complete Criminal Checks provides a REST API to search for criminal offense records across all U.S.

CRXcavator provides programmatic access to chrome extension risk scoring via REST API.

FingerprintJS Pro is a browser fingerprinting API that identifies visitors with extreme accuracy, even in incognito mode.

FraudLabs Pro is an order screening API that uses AI to evaluate the fraud risk of e-commerce transactions.

FullHunt is an attack surface intelligence API that lets you discover and explore internet-facing assets — domains, subdomains, and hosts — associated with any target.

GitGuardian provides programmatic access to scan files for secrets (api keys, database credentials) via REST API.

GreyNoise analyzes internet-wide scanning activity and lets you look up any IP address to determine whether it is a known internet scanner, bot, or legitimate user.

HackerOne's API gives programmatic access to bug bounty program data, reports, and vulnerability information on the HackerOne platform.

Have I Been Pwned (HIBP) lets you check whether an email address or password has appeared in known data breaches.

Intelligence X is an OSINT search engine API that lets you search historical and leaked data including emails, domains, IPs, URLs, and more from the dark web and other sources.

LoginRadius is a managed customer identity and access management (CIAM) platform that provides APIs for user registration, login, social authentication, and profile management.

The Privacy.com API lets developers create virtual, merchant-specific credit card numbers that protect real bank details during online purchases.

Pulsedive is a threat intelligence platform that lets you look up IPs, domains, and URLs to see if they are associated with malicious activity.

SecurityTrails provides detailed DNS and WHOIS history for domains and IP addresses, letting you trace how a domain's configuration has changed over time.

Shodan is a search engine that continuously scans the internet and indexes metadata about connected devices like servers, routers, webcams, and industrial systems.

Spyse (now part of SecurityTrails) is an internet asset search engine that provides comprehensive data on domains, IPs, SSL certificates, and autonomous systems.

Threat Jammer provides programmatic access to risk scoring service from curated threat intelligence data via REST API.

VulDB is a vulnerability database API that lets you query detailed information about security vulnerabilities, CVEs, and threat intelligence data.

The Best Buy API gives you access to Best Buy's product catalog, store locations, pricing, and buying options in real time.

Dummy Products provides programmatic access to an api to fetch dummy e-commerce products json data with placeholder images via REST API.

The Lazada Open Platform API lets sellers and developers access Lazada's Southeast Asian marketplace to retrieve product data, manage orders, track seller performance metrics, and handle logistics.

Mercado Libre is the largest e-commerce marketplace in Latin America, and its API gives developers access to product listings, pricing, seller data, and order management across 18 countries.

Octopart is an electronic component search engine, and its API gives you access to detailed part data including pricing from hundreds of distributors, stock availability, datasheets, and technical specifications.

The OLX Poland API allows developers to integrate with OLX's Polish classifieds marketplace to post and manage adverts, communicate with users, and retrieve listing data.

The Shopee Open Platform API allows sellers and developers to integrate with Shopee, one of Southeast Asia's largest e-commerce platforms.

The WooCommerce REST API lets you read and manage data on any WordPress site running WooCommerce — including products, orders, customers, and coupons.

Ayrshare is a social media API platform that lets you publish posts, retrieve analytics, and manage multiple social media accounts across platforms like Twitter, Instagram, Facebook, and LinkedIn from a single API.

Dangerous Discord Database provides programmatic access to database of malicious discord accounts via REST API.

Meetup.com API lets you access event and group data from the Meetup platform using GraphQL.

Revolt provides programmatic access to revolt open source discord alternative via REST API.

TamTam is a Russian messaging app and its Bot API lets you build chatbots that can send messages, receive updates, and interact with users on the platform.

The Telegram Bot API lets you build automated bots that can send messages, images, and files through Telegram chats.

Telegraph is a minimalist publishing API from the Telegram team that lets you create and edit clean, shareable blog posts programmatically.

API-FOOTBALL provides comprehensive data on football (soccer) leagues, teams, fixtures, live scores, and player statistics from competitions worldwide.

ApiMedic provides programmatic access to apimedic offers a medical symptom checker api primarily for patients via REST API.

Canadian Football League (CFL) provides programmatic access to official json api providing real-time league, team and player statistics about the cfl via REST API.

Cloudbet API lets you access real-time sports odds and place bets programmatically on a wide range of sports events.

CollegeFootballData.com API provides detailed statistics, scores, and historical records for American college football (NCAA).

Football API on RapidAPI provides squad statistics, top scorers, and match data for football (soccer) leagues around the world.

Football-Data API offers structured football data including match schedules, live scores, team rosters, and competition tables for major European leagues.

JCDecaux Bike API gives you real-time availability data for JCDecaux self-service bicycle stations across 40+ cities worldwide.

NBA Data via RapidAPI provides comprehensive NBA statistics including live scores, game schedules, standings, and player stats.

Premier League Standings API via RapidAPI delivers live and historical English Premier League scores, standings tables, and player statistics.

Sport Data provides programmatic access to get sports data from all over the world via REST API.

Sport Vision provides programmatic access to identify sport, brands and gear in an image.

Sportmonks Cricket API provides live cricket scores, player and team statistics, fixtures, and fantasy cricket data from international and domestic competitions worldwide.

Sportmonks Football API delivers comprehensive football data including live scores, fixtures, standings, player statistics, TV channels, and historical results for leagues like the EPL and La Liga.

TheSportsDB is a crowd-sourced sports database providing data on teams, players, leagues, and events across dozens of sports.

Wger is an open-source workout manager API that provides structured data on exercises, muscle groups, and equipment.

FakeJSON provides programmatic access to service to generate test and fake data via REST API.

GeneradorDNI is a data generator API that creates realistic fake profiles including personal identity numbers, vehicle data, bank accounts, and credit card details for testing purposes.

Mailsac lets you create disposable email addresses and read incoming messages via API — ideal for testing email-sending features in your app.

Mockaroo lets you generate realistic fake datasets in JSON, CSV, SQL, or XML with fully customizable schemas.

Randommer is a multi-purpose random data API that generates names, phone numbers, credit card numbers, text, and more — all through a single key-authenticated endpoint.

Aylien Text Analysis provides programmatic access to a collection of information retrieval and natural language apis via REST API.

Cloudmersive NLP API provides a broad set of text analysis tools including sentiment analysis, entity extraction, language detection, and profanity filtering.