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, Computer & Electronics and 36 other categories.
Usablenet is leading in Shopping, Clothing, Sports, Recreation & Hobbies and 17 other categories.
WebProspector is leading in most countries, including Germany, Austria, Netherlands, Switzerland and 8 other countries.
WebProspector is leading in Germany, Austria, Netherlands, Switzerland and 8 other countries.