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

Unifying API testing, API Performance testing, API Mocks and UI testing.

Playwright enables reliable end-to-end testing for modern web apps.

Real API Design-first Development Platform Design. Debug. Test. Document. Mock. Build APIs Faster & Together.

QA Sphere is an all-in-one test management tool for manual and automated testing. It offers features like test case management, issue tracking, and test planning, helping teams streamline testing processes and ensure software quality.

REST API client library for .NET