Market Share by Top Websites

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

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

Websites Categories

1 Certona has better usage coverage in more websites categories. Including Shopping, Clothing, Business & Industry, Beauty & Fitness and 48 other categories.

2 Blueknow is leading in Consumer Electronics, Autos & Vehicles, Motorcycles, Adult and 12 other categories.


1 Certona is leading in most countries, including United States, Canada, United Kingdom, France and 39 other countries.

2 Blueknow is leading in Spain, Italy, Brazil, Portugal and one other country.