Marktest is leading in Top 10K Sites and Top 100K Sites.
Vertster has better usage coverage in more websites categories. Including Computer & Electronics, Computer Hardware, Internet & Telecom, Agriculture & Forestry and 8 other categories.
Marktest is leading in Arts & Entertainment, People & Society, Music & Audio, News & Media and 5 other categories.
Vertster is leading in most countries, including Australia, Germany, Great Britain, United States and one other country.
Vertster is leading in Australia, Germany, Great Britain, United States and one other country.