Charles Proxy
Fiddler
Proxyman.io
HTTP Toolkit
Surge for Mac
nginx
mitmproxy
Weer
RestCase
API Fortress
HttpMaster
Hoppscotch
Request inspector
CurlHub.io
Advanced REST Client (ARC)
MockServer
Charles ProxyFiddler - Fiddler is a debugging program for websites.
API Fortress - API performance, accuracy, and uptime testing. Without code.
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.
HTTP Toolkit - Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.
Hoppscotch - Open source API development ecosystem