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 Business & Industry, Internet & Telecom, Computer & Electronics, Health and 21 other categories.
Zeta Search is leading in People & Society, Online Marketing, Finance, Accommodation & Hotels and 11 other categories.
w3roi is leading in most countries, including China, Canada, Russia, United Kingdom and 5 other countries.
Zeta Search is leading in United States, Malta and Colombia.