HTTP Debugger - Debug HTTP API calls to a back-end and between back-ends. Easy of use, clean UI, and short ramp-up time. Not a proxy, no network issues!
Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
Google Chrome Developer Tools - Get started with Google Chrome's built-in web developer tools.
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
Firefox Developer Tools - Examine, edit, and debug HTML, CSS, and JavaScript on the desktop and on mobile.
James - James is a HTTP Proxy and Monitor that enables developers to view and intercept requests made from...