Best Browser Extensions -- 2016 Edition

Right now my main browser is Firefox, which I use with uBlock Origin, Disconnect, HTTPS Everywhere, Privacy Badger, NoScript, Self-Destructing Cookies, Decentraleyes, Privacy Settings, and Clean Links. 

 (N.B. the first four of these are also available in Chromium-based browsers.) 

I use Chrome as a secondary browser, with the first four of the aforementioned extensions, plus also Clear Cache and occasionally Flashcontrol.

This one has nothing to do with security or privacy, but Reedy on Chromium is a really nice tool for speed reading.