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 116 other categories.
Kitara Media is leading in History, Lottery and Graphics & Multimedia Tools.
Ad Butler is leading in most countries, including United States, United Kingdom, Canada, Mexico and 75 other countries.
Kitara Media is leading in Iran, Sri Lanka and Latvia.