Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
HTTPS Everywhere - Chrome extension that encrypts and secures your browser
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.
Smart HTTPS - Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
SSL Enforcer - SSL Enforcer - Force SSL/TLS encryption for any browser or app. Block all unsecure connections.