Marktest is leading in Top 10K Sites and Top 100K Sites.
Zeta Search has better usage coverage in more websites categories. Including Finance, Business & Industry, Banking, Financial Management and 7 other categories.
Marktest is leading in Newspapers, News & Media, TV & Video and Arts & Entertainment.
Zeta Search is leading in most countries, including United States, Canada, India, Philippines and one other country.
Marktest is leading in Brazil and Portugal.