AdBlock Plus
https://adblockplus.org/
* disable the ‘allow some non-intrusive advertising’ option
* grab your subscriptions here https://adblockplus.org/en/subscriptions
Disconnect
https://disconnect.me/
* visualise and disable tracking sites and cookies
Google Analytics Opt Out
https://tools.google.com/dlpage/gaoptout
* disable data collection by Google Analytics
HTTPS Everywhere
https://www.eff.org/https-everywhere
* encrypt your communication with websites
Media Hint
https://mediahint.com/
* access region blocked sites
ProxMate
http://proxmate.dave.cx/
* access region blocked sites
Hola Unblocker
https://hola.org/
* access region blocked sites
* being flagged as malware so use at your own risk
Reddit Enhancement Suite
http://redditenhancementsuite.com/
* must have if you use reddit
Streamus
http://streamus.com/
* youtube streaming music in your browser
* chrome only
PushBullet
https://www.pushbullet.com/
* send links, notes, and files from chrome to android
* chrome and android only