Observer
2 websites

Observer is free to use

http://observerapp.com/

Observer is a web analytic tool developed by Ludwig Pettersson. Observer also includes a toolbar that lets you view your analytics no matter what site you are on.

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Scout Analytics
7 websites

Scout Analytics offers both free and paid options

http://www.scoutanalytics.com

Scout Analytics is the leader in digital revenue optimization, enabling publishers to increase their average revenue per user (ARPU) by as much as 10-15 percent. Scout Analytics™ SaaS-based application leverages patent-pending behavioral an...

Market Share by Top Websites

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

Websites Categories

1 Scout Analytics has better usage coverage in more websites categories. Including Law & Government and Science & Education.

2 Observer is leading in Computers Electronics & Technology.

Geography

1 Scout Analytics is leading in most countries, including United States, Germany, India, South Korea and one other country.

2 Observer is leading in Russia.