Marktest is leading in Top 10K Sites and Top 100K Sites.
Zeta Search has better usage coverage in more websites categories. Including Finance, Banking, Investing, Health and 3 other categories.
Marktest is leading in Arts & Entertainment, Newspapers, News & Media, TV & Video and one other category.
Zeta Search is leading in most countries, including United States, India and Singapore.
Zeta Search is leading in United States, India and Singapore.