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 57 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, Spain and 21 other countries.
YellowTracker is leading in Netherlands, Belgium, Korea Republic, China and 2 other countries.