Usablenet is leading in Top 100K Sites and Top 1M Sites.
Usablenet has better usage coverage in more websites categories. Including Shopping, Business & Industry, Clothing, Arts & Entertainment and 18 other categories.
Zeta Search is leading in Finance, Internet & Telecom, Health, Online Marketing and 17 other categories.
Usablenet is leading in most countries, including United States, United Kingdom, Spain, Italy and 6 other countries.
Zeta Search is leading in Bangladesh, Israel, Philippines, Singapore and one other country.