Premiumize.me extension for Opera
Secure password aggregator.
Filter request headers
Block certain values (cookies, etc.) from http request headers.
Google™ Hangout Seen Blocker
Google™ Hangouts Seen Blocker allows you to read your hangouts without notifying the sender.
Provides website information such as Rank, and checks URLs against suspected pages.
Simple, modern, open source and secure password manager.
PfP: Pain-free Passwords
Use a single master password to generate secure passwords for all websites - without losing track of passwords you cannot change.