JSONPlaceholder vs What The Commit

JSONPlaceholder is one of the longest-running free fake REST APIs, serving a fixed set of 100 posts, 500 comments, 10 users, 100 albums, 5,000 photos, and 200 todos as JSON. Every standard verb works against each resource, including nested routes like /posts/1/comments, though POST/PUT/PATCH/DELETE only simulate a write and return a fake response without persisting any change. Its data and IDs never change, which is exactly why it's the default backend in countless framework tutorials and testing guides.

What The Commit serves an endless stream of joke commit messages drawn from a fixed pool, built to be piped into git commit -m when you can't think of anything better. The plain-text /index.txt endpoint returns one message per request for shell scripting and git aliases, and a live /index.json endpoint wraps the same message with a stable hash and permalink. It's free, keyless, and carries no rate limit or pricing page.