Quantcast
274,085 websites

Quantcast is free to use

http://www.quantcast.com/

Quantcast helps advertisers and publishers better understand, find and access targeted audiences in real-time. Marketers use Quantcast to amplify their targeting and reach consumers who look just like their best performing customers with un...

VS

TNS
60,851 websites

TNS costs money

http://www.tnsglobal.com/

Transaction Network Services (TNS) is a leading global provider of data communications and interoperability solutions. By combining innovation, advanced technology, experience and service excellence, TNS delivers managed communications solu...

Market Share by Top Websites

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

2 In terms of market share, TNS is clearly lagging behind, losing to Quantcast in all segments.

Websites Categories

1 Quantcast has better usage coverage in more websites categories. Including Arts & Entertainment, Games, Science & Education, Computers Electronics & Technology and 20 other categories.

2 TNS hasn't got a lead over Quantcast in any websites category.

Geography

1 Quantcast is leading in most countries, including United States, United Kingdom, Japan, France and 153 other countries.

2 TNS is leading in Russia, Ukraine, Belarus, Kazakhstan and 3 other countries.