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 United Kingdom, Russia, Germany, Ukraine and 8 other countries.
Zeta Search is leading in United States, Canada, Afghanistan, Oman and one other country.