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...
mitmproxy : mitmproxy is your swiss-army knife for debugging, testing, privacy measurements, and penetration testing. It can be used to intercept, inspect, modify...
badssl.com : Memorable site for testing clients against bad SSL configs.
BounCA : BounCA is a tool to manage your personal SSL certificates and authorities in a central and easy to use interfaces. It provides an easy accessible web ...
WebScarab : WebScarab is a framework for analysing applications that communicate using the HTTP and HTTPS protocols.
This free online service performs a deep analysis of the configuration of any SSL web server on the public Internet.