Don't know but seems better than AdBlock Plus for Chrome. I think I will settle with AdMuncher Basic subscription from GOTD for now while waiting the release of AdMuncher 5. It should have been out but the developer decided to buy some time instead by releasing lots of 4.9X beta stages. AdMuncher 5 is going to introduce multilingual interface from which I long to get a Premium license. (I hope it will entitle to that super pricey lifetime license ). But for an application whose size less than a mega, AdMuncher has loads of text.