Usablenet is leading in Top 100K Sites and Top 1M Sites.
YellowTracker has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, News & Media and 54 other categories.
Usablenet is leading in Shopping, Consumer Electronics, Sports, Food & Drink and 15 other categories.
YellowTracker is leading in most countries, including Netherlands, Belgium, Germany, Russia and 10 other countries.
Usablenet is leading in United States, United Kingdom, Spain, Italy and 6 other countries.