Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
ModSecurity - ModSecurity is an Open Source web application firewall developed by Trustwave's SpiderLabs.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Naxsi - NAXSI means Nginx Anti XSS & SQL Injection.
HTTP Headers - HTTP Headers allows you to quickly see the HTTP header information for the current URL.
Shadow Daemon - Shadow Daemon is a collection of tools to detect, record and prevent attacks on web applications.