FredHopper is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
YellowTracker has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, News & Media and 56 other categories.
FredHopper is leading in Shopping, Clothing, Home & Garden, General Merchandise and 9 other categories.
FredHopper is leading in most countries, including France, United Kingdom, Germany, Belgium and 17 other countries.
YellowTracker is leading in Netherlands, Canada, Taiwan, India and one other country.