Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Burp Suite - Burp Suite is an integrated platform for performing security testing of web applications.
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.
OpenVAS - The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools...