Free Social APIs

The 4chan API provides read-only, public access to boards, threads, and posts on 4chan with no authentication required.

aztro provides programmatic access to daily horoscope info for yesterday, today, and tomorrow via REST API.

Doge-Meme provides programmatic access to top meme posts from r/dogecoin which include 'meme' flair via REST API.

Fuck Off as a Service (FOAAS) is a humorous REST API that returns creative dismissal messages in various formats.

The Hacker News API gives you free, real-time access to the stories, comments, jobs, and polls from the popular tech news community.

Hashnode is a developer blogging platform whose public GraphQL API lets you query posts, publications, and author profiles without any authentication.

Lanyard is a free, open-source API that exposes your real-time Discord presence such as what you are playing or listening to via a simple REST API or WebSocket.

Open Collective API gives you free access to data about open-source projects and communities that use Open Collective for transparent fundraising.