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 In terms of market share, Adzerk is clearly lagging behind, losing to Rubicon Project in all segments.

Websites Categories

1 Rubicon Project has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Internet & Telecom and 142 other categories.

2 Adzerk is leading in Adult, Finance, Investing, Furniture and 35 other categories.


1 Rubicon Project is leading in most countries, including United States, France, Japan, Brazil and 140 other countries.

2 Adzerk is leading in Reunion, Madagascar, Guadeloupe, New Caledonia and 13 other countries.