In terms of market share, Observer is clearly lagging behind, losing to Vertster in all segments.
Observer has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Computer & Electronics, People & Society and 23 other categories.
Vertster is leading in Computer Hardware, Jobs & Employment, Food & Drink, Search Engine and 3 other categories.
Observer is leading in most countries, including United States, Russia, Canada, United Kingdom and 8 other countries.
Vertster is leading in Australia and Malaysia.