Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
Cellist - Cellist is an all-in-one HTTP debugging proxy software designed for OS that provides a straightforward approach to put a proxy between the HTTP client and the internet.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
HTTP Analyzer - undefined
mitmproxy - mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.