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, Open AdExchange 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, News & Media, Autos & Vehicles, Career & Education and 126 other categories.

2 Open AdExchange is leading in Auctions, Office Products, Computer Hardware, File Sharing and one other category.


1 Centro is leading in most countries, including United States, Canada, United Kingdom, France and 40 other countries.

2 Open AdExchange is leading in Denmark, Guatemala, Cote d Ivoire and Norway.