In terms of market share, Vertster is clearly lagging behind, losing to WebProspector in all segments.
WebProspector has better usage coverage in more websites categories. Including Business & Industry, Marketing & Advertising, Internet & Telecom, Arts & Entertainment and 27 other categories.
Vertster hasn't got a lead over WebProspector in any websites category.
WebProspector is leading in most countries, including Germany, United States, United Kingdom, Switzerland and 16 other countries.
Vertster is leading in Brazil.