Slackmojis - A directory of the best custom slack emojis
Smart HTTPS - Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
Mojirater - Emoji reactions & social share buttons for your site
SSL Enforcer - SSL Enforcer - Force SSL/TLS encryption for any browser or app. Block all unsecure connections.
Keybase for Chrome - A secure chat button for every profile
HTTPZ - HTTPZ is meant to be unobtrusive and lightweight.