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 In terms of market share, Shopzilla is clearly lagging behind, losing to GroupM Server in all segments.

Websites Categories

1 Shopzilla has better usage coverage in more websites categories. Including Shopping, People & Society, Arts & Entertainment, Business & Industry and 103 other categories.

2 GroupM Server is leading in Autos & Vehicles, Movies, TV & Video, Cooking & Recipes and 20 other categories.


1 Shopzilla is leading in most countries, including United States, United Kingdom, India, Canada and 23 other countries.

2 GroupM Server is leading in Poland, Germany, Denmark, Spain and 21 other countries.