In terms of market share, w3roi is clearly lagging behind, losing to Zeta Search in all segments.
w3roi has better usage coverage in more websites categories. Including Internet & Telecom, Business & Industry, Computer & Electronics, Health and 24 other categories.
Zeta Search is leading in Online Marketing, People & Society, Finance, Equestrian and 11 other categories.
w3roi is leading in most countries, including China, India, United Kingdom, Azerbaijan and 4 other countries.
Zeta Search is leading in United States and Canada.