Market Share by Top Websites

1 33across is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Quantcast is clearly lagging behind, losing to 33across in all segments.

Websites Categories

1 33across has better usage coverage in more websites categories. Including Arts & Entertainment, Computers Electronics & Technology, Science & Education, News & Media and 19 other categories.

2 Quantcast is leading in Travel & Tourism.


1 33across is leading in most countries, including France, Brazil, Indonesia, Spain and 117 other countries.

2 Quantcast is leading in United States, Russia, United Kingdom, Canada and 88 other countries.