Market Share by Top Websites

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

2 Despite its recent growth, Undertone Networks is still behind GroupM Server in all market share segments.

Websites Categories

1 Undertone Networks has better usage coverage in more websites categories. Including People & Society, News & Media, Business & Industry, Sports and 59 other categories.

2 GroupM Server is leading in Arts & Entertainment, Internet & Telecom, Autos & Vehicles, Movies and 36 other categories.


1 GroupM Server is leading in most countries, including Poland, Germany, Denmark, Italy and 18 other countries.

2 Undertone Networks is leading in United States, United Kingdom, Canada, Japan and 17 other countries.