Adblock Plus - Was a popular extension to block ads.As of July 2015, most of the development is being done on uBlock Origin and the codebases are deviating substantially. The lead developer of uBlock forked the project and created uBlock Origin.
It comes with several filter lists ready to use out-of-the-box (including EasyList, Peter Lowe's, several malware filter lists). It can be counterproductive as they conflict with each other, and neither does it increase security whatsoever. Tip: It is not recommended to install all the privacy extensions.
