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, Home & Garden, Health and 30 other categories.
FredHopper is leading in Shopping, Business & Industry, Clothing, Adult and 10 other categories.
FredHopper is leading in most countries, including France, United Kingdom, Netherlands, Germany and 22 other countries.
Usablenet is leading in United States, Canada, Uzbekistan, Trinidad and Tobago and 4 other countries.