Hoppscotch Community Edition is an open-source API development and testing tool for REST, GraphQL, WebSocket, SSE, MQTT, and Socket.IO with collections and environments.

80.2k stars6.1k forksMITlast commit Actively maintained
Collaborative API development and testing tool for creating, sending and monitoring REST, GraphQL, WebSocket and gRPC requests. Includes environments, collections, request history, mock servers, automated workflows and team collaboration features for API debugging and testing.
Hoppscotch Community Edition is an open-source API development and testing tool for REST, GraphQL, WebSocket, SSE, MQTT, and Socket.IO with collections and environments.

80.2k stars6.1k forksMITlast commit Actively maintained
Open-source API client and HTTP interceptor to test APIs, modify requests and responses, and create API mocks for faster development and debugging.

6.8k stars697 forkslast commit Actively maintained
Yaade is a self-hosted, collaborative API development environment that lets teams share API collections, run tests, and import from OpenAPI or Postman.

2k stars88 forksMITlast commit Slowing down
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 3 shipped a commit in the last six months. Licences in this list: MIT. In exchange you take on hosting, backups and updates yourself.
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