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, Arts & Entertainment, News & Media, Sports and 135 other categories.
PubExchange is leading in Home & Garden, Nursery & Playroom, Beauty & Fitness, Magazines & E-Zines and 14 other categories.
Ad Butler is leading in most countries, including United States, United Kingdom, Canada, Belarus and 75 other countries.
PubExchange is leading in Nepal, Poland, Angola, Antigua and Barbuda and one other country.