Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS

Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

Weer - A HTTP protocol debugger with Chrome DevTools frontend interface

tcpdump - tcpdump is a common packet analyzer that runs under the command line.

James - James is a HTTP Proxy and Monitor that enables developers to view and intercept requests made from...

SmartSniff - SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers.