Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
The Security Checklist - The Practical Security Checklist for Web Developers
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
SafeBase - SafeBase is the interactive security portal to share your security posture, automate access to sensitive compliance information, and subscribe to vendor security program updates.
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.
WordPress Security Scanner - Check if your WordPress site has known vulnerabilities