WebProspector 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 66 other categories.
WebProspector is leading in Internet & Telecom, Marketing & Advertising, Computer & Electronics, Software and 19 other categories.
YellowTracker is leading in most countries, including Netherlands, Belgium, Russia, United States and 13 other countries.
WebProspector is leading in Germany, Austria, Switzerland, Portugal and 9 other countries.