Marktest is leading in Top 10K Sites and Top 100K Sites.
Zeta Search has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Finance, Online Marketing and 18 other categories.
Marktest is leading in Arts & Entertainment, People & Society, Music & Audio, News & Media and 3 other categories.
Zeta Search is leading in most countries, including United States, India, Canada, China and 10 other countries.
Marktest is leading in Portugal, Brazil, Israel and Romania.