FredHopper is leading in Top 100K Sites and Top 1M Sites.
FredHopper has better usage coverage in more websites categories. Including Shopping, Business & Industry, Clothing, Home & Garden and 26 other categories.
Marktest is leading in People & Society, Arts & Entertainment, Music & Audio, News & Media and 5 other categories.
FredHopper is leading in most countries, including France, United Kingdom, Netherlands, Germany and 27 other countries.
Marktest is leading in Portugal, Brazil and India.