Usablenet is leading in Top 100K Sites and Top 1M Sites.
WebProspector has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Marketing & Advertising, Arts & Entertainment and 33 other categories.
Usablenet is leading in Shopping, Food & Drink, Food & Grocery Retailers, Home & Garden and 27 other categories.
WebProspector is leading in most countries, including Germany, Austria, Serbia, Portugal and 10 other countries.
WebProspector is leading in Germany, Austria, Serbia, Portugal and 10 other countries.