C3 Metrics
trend
420 websites

C3 Metrics costs money

http://www.c3metrics.com

C3 Metrics’ Intellectual Property and SaaS platform solves difficult problems in a changing market. C3 Metrics’ IP is the first of its kind to detect viewable impressions through cross-domain iFrames while seamlessly connected to the mos...

VS

GroupM Server
trend
9,488 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.

Market Share by Top Websites

1 GroupM Server is leading in The Entire Web.

2 C3 Metrics 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 Arts & Entertainment, People & Society, Business & Industry, Internet & Telecom and 52 other categories.

2 C3 Metrics is leading in Travel, Accommodation & Hotels, Finance, Photography and 33 other categories.

Geography

1 GroupM Server is leading in most countries, including Poland, Germany, Denmark, United Kingdom and 26 other countries.

2 C3 Metrics is leading in United States, Canada, Russia, Japan and 10 other countries.