TestRail’s web-based test case management is used by thousands of great QA and Development teams to efficiently organize, track and manage software testing.
HttpMaster - HttpMaster is a professional software tool for testing and debugging HTTP applications, primarily aimed at REST API applications and web services.
PractiTest - PractiTest is a cloud based Innovative test management tool.
Hoppscotch - Open source API development ecosystem
Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
MockServer - Easy mocking of any system you integrate with via HTTP or HTTPS.
Qase - Test case management software for QA and development teams that helps you make your product better.