Marktest is leading in Top 10K Sites and Top 100K Sites.
Monsido has better usage coverage in more websites categories. Including Business & Industry, Travel, Internet & Telecom, Tourism and 28 other categories.
Marktest is leading in People & Society, Arts & Entertainment, Music & Audio, Soccer and one other category.
Monsido is leading in most countries, including Denmark, United Kingdom, Sweden, Norway and 9 other countries.
Marktest is leading in Brazil.