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 22 other categories.
Vertster is leading in Computer & Electronics, Computer Hardware, Internet & Telecom, Womens Interests and 4 other categories.
FredHopper is leading in most countries, including France, Netherlands, United Kingdom, Germany and 25 other countries.
Vertster is leading in Australia and Canada.