Market Share by Top Websites

1 Centro is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Ad Butler is clearly lagging behind, losing to Centro in all segments.

Websites Categories

1 Centro has better usage coverage in more websites categories. Including Business & Industry, Autos & Vehicles, Car Buying, Career & Education and 73 other categories.

2 Ad Butler is leading in News & Media, Arts & Entertainment, Sports, Food & Drink and 56 other categories.


1 Ad Butler is leading in most countries, including United Kingdom, Canada, Russia, Mexico and 65 other countries.

2 Centro is leading in United States, Croatia, Samoa, Ukraine and 11 other countries.