eProof is leading in Top 10K Sites and Top 100K Sites.
Vertster has better usage coverage in more websites categories. Including Computer & Electronics, People & Society, Computer Hardware, Internet & Telecom and 10 other categories.
eProof is leading in News & Media, Arts & Entertainment, Finance, Accounting and one other category.
Vertster is leading in most countries, including Australia, Germany, China, Brazil and one other country.
eProof is leading in United States.