Vizzit is leading in Top 100K Sites and Top 1M Sites.
w3roi has better usage coverage in more websites categories. Including Internet & Telecom, Business & Industry, Computer & Electronics, Health and 24 other categories.
Vizzit is leading in Science, Social Sciences, Law & Government, Government and 21 other categories.
w3roi is leading in most countries, including United States, Brazil, India, Pakistan and 7 other countries.
Vizzit is leading in Sweden, China, Netherlands, Finland and 4 other countries.