If needed, use the backup/restore feature of uBlock Origin to transfer settings between the two extensions. Overall, we liked uBlock Origin over AdBlock Plus, and we are. 'uBlock Origin Dev Build' does not share any settings with the stable release of 'uBlock Origin', they are installed as two distinct extensions. uBlock Origin blocks not only advertisements but also trackers, malware sites, and more. Report regression bugs at uBlock Origin issue tracker: Use this development build of uBlock Origin if you want to help test new fixes since last stable release version, and to help find regression bugs. The stable version of uBlock Origin is at: The default behavior of uBlock Origin when newly installed is to block ads, trackers and malware sites - through EasyList, EasyPrivacy, Peter Lowe’s ad/tracking/malware servers, various lists of malware sites, and uBlock Origin's own filter lists.
UBlock Origin is NOT an 'ad blocker': it is a wide-spectrum blocker - which happens to be able to function as a mere 'ad blocker'. This is the official development build of uBlock Origin.
