FredHopper is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
FredHopper has better usage coverage in more websites categories. Including Shopping, Business & Industry, Clothing, Home & Garden and 28 other categories.
Marktest is leading in People & Society, Arts & Entertainment, Music & Audio, TV & Video and 4 other categories.
FredHopper is leading in most countries, including France, United Kingdom, Germany, Netherlands and 22 other countries.
Marktest is leading in Portugal and Brazil.