Market Share by Top Websites

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

2 Despite its recent growth, CPMStar is still behind Rubicon Project in all market share segments.

Websites Categories

1 Rubicon Project has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Internet & Telecom and 140 other categories.

2 CPMStar is leading in Games, Video Games, Online, Sports and 38 other categories.


1 Rubicon Project is leading in most countries, including United States, France, Japan, Brazil and 102 other countries.

2 CPMStar is leading in Russia, India, Indonesia, Viet Nam and 63 other countries.