Rated 4 out of 5 stars

I've been using TrueBlock Plus for many years in SeaMonkey & Firefox. (Oddly enough finding it within the plugin list within Firefox isn't possible anymore. You have to use a separate search engine to find it.) Yea, it's AdBlock Plus with a few minor tweaks. Thus they lose two stars for that. But they gain back one big star for not asking for handouts or turning off the blocking after an update, because they want you to make a donation.

If websites controlled the content of their ads better there wouldn't be a need for these plugins. Having one of these plugins is also a great deterrent to having malware injected into your system from unscrupulous advertisers.

TrueBlock Plus gets my vote for best adblocker.