Market Share by Top Websites

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

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

Websites Categories

1 AdReactor has better usage coverage in more websites categories. Including Arts & Entertainment, Music & Audio, Internet & Telecom, Business & Industry and 42 other categories.

2 GroupM Server is leading in People & Society, Autos & Vehicles, Food & Drink, Cooking & Recipes and 34 other categories.


1 AdReactor is leading in most countries, including Indonesia, India, United States, Turkey and 61 other countries.

2 GroupM Server is leading in Poland, Germany, Denmark, Sweden and 11 other countries.