eProof is leading in Top 10K Sites and Top 100K Sites.
Vertster has better usage coverage in more websites categories. Including People & Society, Internet & Telecom, Computer Hardware, Computer & Electronics and 10 other categories.
eProof is leading in Arts & Entertainment, Finance, Accounting, News & Media and one other category.
Vertster is leading in most countries, including Australia, Portugal and Canada.
eProof hasn't got a lead over Vertster in any country.