SimpleAPI is a set of free hosted REST APIs with real user registration and login, and data that persists. Learn a front-end framework against a real API, without setting up a server or a Firebase account.
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Most todo app tutorials have no backend at all or lean on a vendor SDK, so they never show how login, tokens and per-user data work. SimpleAPI gives you plain REST endpoints you can call from any language or framework, with login included.
Users and todo items. The classic tutorial project with registration, login and a private list per user.
Todos API docs →A Reddit-style backend: forums, topics, comments, votes, tags, rules, moderators and reports.
Forums API docs →Reviews and comments for any product or page. Good for rating widgets and comment sections.
Reviews API docs →User accounts and login: register, log in, reset passwords and verify emails, for your own app or another SimpleAPI service.
Auth API docs →Notes that belong to a user, with pins, tags and search. Share a note and anyone with your key can read it.
Notes API docs →A small shop backend: a product catalog, a cart per user and orders. Built for learning, so it takes no payments.
Store API docs →apikey parameter or an APIKEY header.