HTTPS Everywhere - Chrome extension that encrypts and secures your browser
SSL Enforcer - SSL Enforcer - Force SSL/TLS encryption for any browser or app. Block all unsecure connections.
Smart HTTPS - Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
ForceTLS - ForceTLS allows web sites to tell Firefox that they should be served via HTTPS in the future; this...
ForceHTTPS - As wireless networks proliferate, web browsers operate in an increasingly hostile network...
HTTPS Only - Encrypt the web and stay safe