Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.

Swagger UI allows anyone — be it your development team or your end consumers — to visualize and interact with the API’s resources without having any of the implementation logic in place

Uptime Kuma is an easy-to-use self-hosted monitoring tool.

The World's first AI Driven Enterprise Software Reliability Platform

Design, debug, and test APIs locally or in the cloud

HyperTest is a no-code test automation tool that regresses all your APIs by auto-generating integration tests using your network traffic, also giving a way to reproduce these failures inside actual user-journeys.