Smart HTTPS - Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
httpbin(1) - HTTP request and response service
SSL Enforcer - SSL Enforcer - Force SSL/TLS encryption for any browser or app. Block all unsecure connections.
HTTPDump - A simple, beautiful Webhook debugging tool.
KB SSL Enforcer - This extension enforces encryption for websites that support it as much as currently possible in...
HTTP Prompt - An interactive command-line HTTP client