In terms of market share, Observer is clearly lagging behind, losing to Zeta Search in all segments.
Observer has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Computer & Electronics, People & Society and 21 other categories.
Zeta Search is leading in Finance, Health, Online Marketing, Career & Education and 11 other categories.
Observer is leading in most countries, including Russia, Canada, Netherlands, United Kingdom and 7 other countries.
Zeta Search is leading in United States, Colombia, India, Malta and one other country.