FriendFilter - Auto unfriend tool for Facebook
HTTPS Everywhere - Chrome extension that encrypts and secures your browser
Detox for Facebook - Replace your Facebook feed with PH, HN, DN and more.
Smart HTTPS - Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts...
Keep My Friends - A lightweight, personal CRM to improve your relationships
HTTPZ - HTTPZ is meant to be unobtrusive and lightweight.