Market Share by Top Websites

1 Quantcast is leading in The Entire Web.

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

Websites Categories

1 Quantcast has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Business & Industry, Music & Audio and 232 other categories.

2 comScore ScorecardResearch is leading in Marketing & Advertising, Email, College & University Press, Automotive News and 4 other categories.

Geography

1 comScore ScorecardResearch is leading in most countries, including United States, Russia, United Kingdom, Brazil and 188 other countries.

2 Quantcast is leading in Bangladesh, Nigeria, Sri Lanka, Tanzania and 23 other countries.