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, Computer & Electronics, Arts & Entertainment, People & Society and 23 other categories.
Zeta Search is leading in Online Marketing, Health, Finance, Career & Education and 11 other categories.
Observer is leading in most countries, including Russia, France, United Kingdom, Ukraine and 8 other countries.
Zeta Search is leading in United States, India and Canada.