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 28 other categories.
Marktest is leading in People & Society, Arts & Entertainment, Music & Audio, Newspapers and 4 other categories.
FredHopper is leading in most countries, including France, United Kingdom, Netherlands, Germany and 24 other countries.
Marktest is leading in Portugal and Brazil.