API Fortress is recommended for development teams looking for an end-to-end API testing platform, particularly those working in environments that require continuous integration and delivery. It's also well-suited for businesses of varying sizes that need reliable API monitoring and performance insights.
MockServer - Easy mocking of any system you integrate with via HTTP or HTTPS.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Hoppscotch - Open source API development ecosystem
Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
HttpMaster - HttpMaster is a professional software tool for testing and debugging HTTP applications, primarily aimed at REST API applications and web services.
Postman - The Collaboration Platform for API Development