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 23 other categories.
Marktest is leading in People & Society, Music & Audio, Arts & Entertainment, Religion & Spirituality and 2 other categories.
FredHopper is leading in most countries, including France, United Kingdom, Netherlands, Germany and 25 other countries.
Marktest is leading in Brazil.