After reading a bunch of different articles and reviews about this topic, I'm currently testing AdGuard For Safari, which is 1) free, 2) open source, 3) in the

After reading a bunch of different articles and reviews about this topic, I'm currently testing AdGuard For Safari, which is 1) free, 2) open source, 3) in the Mac App store. (Not to be mistaken with "AdGuard for Mac", which is an all-encompassing machine firewall.) Overall I'm happy with it so far. It's a little weird in that some aspects of the Safari plugin only work if the standalone app is running at the same time, like the ability to disable blocking for a specific site. Not sure if all new-style adblockers have the same limitation, or if that was a specific decision by AdGuard? Either way, I'm happy with it so far, and happy with the fact that they use multiple Safari extensions to achieve > 50k block patterns, which is the limit for a single extension. (1BlockerX does the same on iOS.)