Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.

experts Open Source

Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.

experts

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

experts Open Source free

Free native HTTPS debugging proxy, API client and MCP server for Mac (Linux beta). Pause, edit and mock any request, inspect LLM calls, find IDOR bugs. Notarized, no account.

bookmark free