In terms of market share, Marktest is clearly lagging behind, losing to Zeta Search in all segments.
Zeta Search has better usage coverage in more websites categories. Including Autos & Vehicles, Business & Industry, Finance, Health and one other category.
Marktest hasn't got a lead over Zeta Search in any websites category.
Zeta Search is leading in most countries, including United States.
Marktest hasn't got a lead over Zeta Search in any country.