When comparing µBlock Origin vs AdBlock, the Slant community recommends µBlock Origin for most people. In the question“What are the best ad blocking browser plugins?” µBlock Origin is ranked 2nd while AdBlock is ranked 7th. The most important reason people chose µBlock Origin is:
Licensed under GPLv3.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free and open source
Licensed under GPLv3.
Pro Offers a quick way to whitelist websites
Pro Does more than just blocking ads
The plugin, through filters, can block malicious websites and tracking, making it very versatile.
Pro Lightweight
The plugin typically uses less memory and CPU time in comparison with other solutions, including Adblock Plus and Ghostery.
Pro Supports element hiding
Pro Blocks a wide selection of annoying ads
AdBlock blocks various kinds of ads found on all websites such as video ads on YouTube, Facebook ads, flashy banners, pop-ups, pop-unders etc.
Cons
Con Acceptable ads turn on by default
Acceptable ads is an ad that follow the guidelines of the set acceptable advertising rules such as ads must be labelled "ads", no pop-outs allowed, no auto-plays, no animations, does not block main content etc. However, users can turn off this feature by going to settings and then unchecking "allow acceptable ads".