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 65 other categories.
WebProspector is leading in Internet & Telecom, Marketing & Advertising, Computer & Electronics, Online Marketing and 19 other categories.
YellowTracker is leading in most countries, including Netherlands, Belgium, United States, Russia and 12 other countries.
WebProspector is leading in Germany, Austria, Switzerland, Hungary and 9 other countries.