FredHopper is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Usablenet has better usage coverage in more websites categories. Including Food & Drink, Food & Grocery Retailers, Health, Sports and 23 other categories.
FredHopper is leading in Shopping, Business & Industry, Clothing, Home & Garden and 12 other categories.
FredHopper is leading in most countries, including France, Netherlands, United Kingdom, Germany and 23 other countries.
Usablenet is leading in United States, Italy, Chile, Thailand and 6 other countries.