FredHopper is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
FredHopper has better usage coverage in more websites categories. Including Business & Industry, Shopping, Clothing, Home & Garden and 36 other categories.
Marktest is leading in Music & Audio, TV & Video, Newspapers, Religion & Spirituality and 2 other categories.
FredHopper is leading in most countries, including United Kingdom, France, Netherlands, Germany and 41 other countries.
Marktest is leading in Portugal and Brazil.