Market Share by Top Websites

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

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

Websites Categories

1 Seznam has better usage coverage in more websites categories. Including Reference Materials, E-commerce & Shopping, Computers Electronics & Technology, Vehicles and 18 other categories.

2 AdAction is leading in News & Media and Law & Government.


1 Seznam is leading in most countries, including Czech Republic, Slovakia, Poland, Germany and 47 other countries.

2 AdAction is leading in Norway, Sweden, United States, Netherlands and 32 other countries.