Market Share by Top Websites

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

2 Despite its recent growth, Gemius is still behind Quantcast in all market share segments.

Websites Categories

1 Quantcast has better usage coverage in more websites categories. Including Games, Arts & Entertainment, Science & Education, Computers Electronics & Technology and 17 other categories.

2 Gemius is leading in Vehicles, E-commerce & Shopping and Heavy Industry & Engineering.


1 Quantcast is leading in most countries, including United States, United Kingdom, France, Canada and 144 other countries.

2 Gemius is leading in Poland, Hungary, Czech Republic, Slovakia and 10 other countries.