In terms of market share, Vertster is clearly lagging behind, losing to Zeta Search in all segments.
Zeta Search has better usage coverage in more websites categories. Including Business & Industry, Finance, Banking, Health and 3 other categories.
Vertster is leading in Internet & Telecom and Search Engine.
Zeta Search is leading in most countries, including United States, Brazil, Canada, India and one other country.
Vertster is leading in China.