GroupM Server
91 websites

GroupM Server is free to use

http://www.groupm.com/

Ghostery Analysis of GroupM Server. See which sites GroupM Server was found on and learn what GroupM is doing with your data.

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MediaMath
45,529 websites

MediaMath is free to use

http://www.mediamath.com

Headquartered in New York, MediaMath was founded in 2007 and is a leader in the demand side platform category (Forrester Wave, Q4 2011). The company buys billions of highly targeted ads per month on behalf of dozens of agencies, including a...

Market Share by Top Websites

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

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

Websites Categories

1 MediaMath has better usage coverage in more websites categories. Including Games, Arts & Entertainment, Vehicles, E-commerce & Shopping and 20 other categories.

2 GroupM Server hasn't got a lead over MediaMath in any websites category.

Geography

1 MediaMath is leading in most countries, including United States, South Korea, Brazil, United Kingdom and 149 other countries.

2 GroupM Server hasn't got a lead over MediaMath in any country.