Blocks ads and annoying cookies as well as optimising your browser by clearing cache many other things you choose
http://getadblock.com/
https://adblox.org/
http://adblockplus.org/
https://total-adblock.com
https://ultrablock.org
https://adguard.com
https://www.ghostery.com/
AdShield
https://chrome-adblocker.com
https://sblock.ch
Urban VPN
https://pie.org
