Market Share by Top Websites

1 Optimost is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.

2 In terms of market share, Observer is clearly lagging behind, losing to Optimost in all segments.

Websites Categories

1 Optimost has better usage coverage in more websites categories. Including People & Society, Finance, Business & Industry, Insurance and 49 other categories.

2 Observer is leading in Computer & Electronics, Software, Photography, Programming and 6 other categories.


1 Optimost is leading in most countries, including United States, United Kingdom, Turkey, Canada and 27 other countries.

2 Observer is leading in Ukraine and China.