Marktest is leading in Top 10K Sites and Top 100K Sites.
Uptrends has better usage coverage in more websites categories. Including People & Society, Business & Industry, Arts & Entertainment, Internet & Telecom and 55 other categories.
Marktest is leading in TV & Video, Newspapers and Soccer.
Uptrends is leading in most countries, including Netherlands, United States, Germany, Belgium and 14 other countries.
Marktest is leading in Portugal and Brazil.