mitmproxy : mitmproxy is your swiss-army knife for debugging, testing, privacy measurements, and penetration testing. It can be used to intercept, inspect, modify...
webhint : webhint is a linting tool that will help you with your site's accessibility, speed, security and more, by checking your code for best practices and co...
SSL Server Test : This free online service performs a deep analysis of the configuration of any SSL web server on the public Internet.
Gitleaks : Gitleaks is an open-source SAST (static application security testing) command line tool for detecting and preventing hardcoded secrets like passwords,...
Mock Service Worker : Mock by intercepting requests on the network level. Seamlessly reuse the same mock definition for testing, development, and debugging.
Memorable site for testing clients against bad SSL configs.