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.

VS

Interpolls
2 websites

Interpolls offers both free and paid options

http://www.interpolls.com/

Founded in 1999, Interpolls is a pioneer and leader in rich media and next generation advertising technologies.

Market Share by Top Websites

2 GroupM Server is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.

Websites Categories

1 GroupM Server has better usage coverage in more websites categories. Including Computers Electronics & Technology, Games, Vehicles, E-commerce & Shopping and 2 other categories.

2 Interpolls is leading in Community & Society.

Geography

1 GroupM Server is leading in most countries, including Poland, United States, Germany, France and 19 other countries.

2 Interpolls is leading in Philippines.