Best Open Source Alternatives to Popular Tools

Thousands are switching to open source. Discover free, community-driven alternatives to the most popular paid tools.

Hoppscotch is a free, open-source API development tool that helps developers test and debug APIs faster with real-time responses.

Postman is a complete API development platform that helps teams design, test, document, and collaborate on APIs faster together.

Insomnia is a free, open-source API client for testing REST, GraphQL, gRPC, and WebSocket APIs with powerful team collaboration features.