Top POSTMAN GitHub Repositories & Tools (2026)

The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀

Scan for sensitive information easily and effectively.

An open-source API debugging and stress testing tool inspired by Postman and a simplified JMeter, optimized for developers with a clean UI and powerful features.

Tetiva — desktop API client for HTTP, gRPC, GraphQL and WebSocket (Wails v3 + Vue 3)

Repo Laboratório de Desenvolvimento de Software

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬