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...
Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
Keybase Chat - End-to-end encrypted chat built into Keybase
HTTPZ - HTTPZ is meant to be unobtrusive and lightweight.