WebProspector is leading in Top 100K Sites and Top 1M Sites.
YellowTracker has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Shopping and 50 other categories.
WebProspector is leading in Business & Industry, Internet & Telecom, Marketing & Advertising, Computer & Electronics and 19 other categories.
WebProspector is leading in most countries, including Germany, Austria, Italy, Spain and 12 other countries.
YellowTracker is leading in Netherlands, Belgium, United States, United Kingdom and 11 other countries.