DoubleVerify
5,168 websites

DoubleVerify offers both free and paid options

http://www.doubleverify.com

DoubleVerify provides online media verification and campaign effectiveness solutions for brand marketers, agencies, advertising networks, demand side platforms, exchanges and digital publishers looking to ensure quality advertising environm...

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eXTReMe Tracker
8,885 websites

eXTReMe Tracker offers both free and paid options

http://extremetracking.com/

Non-public statistics and multiple page tracking are also available.

Market Share by Top Websites

1 eXTReMe Tracker is leading in The Entire Web.

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

Websites Categories

1 eXTReMe Tracker has better usage coverage in more websites categories. Including Adult, Arts & Entertainment, Computers Electronics & Technology, Science & Education and 16 other categories.

2 DoubleVerify is leading in Sports, Food & Drink, Health and Finance.

Geography

1 eXTReMe Tracker is leading in most countries, including United States, Spain, Italy, United Kingdom and 102 other countries.

2 DoubleVerify is leading in Germany, Estonia, Malaysia, Vietnam and 12 other countries.