Ad Butler is leading in Top 100K Sites and Top 1M Sites.
Ad Butler has better usage coverage in more websites categories. Including Business & Industry, News & Media, Arts & Entertainment, Sports and 111 other categories.
FeatureLink is leading in Autos & Vehicles, Automotive News, Celebrities & Entertainment News, Bodyart and 2 other categories.
Ad Butler is leading in most countries, including United States, United Kingdom, Canada, Mexico and 78 other countries.
FeatureLink is leading in Morocco, Burundi and Guernsey.