Below is a list of websites like Dataopedia / services like / similar to Dataopedia :
Launched in December 2008, dataopedia.com is a web service that provides the most comprehensive information about websites available on the Internet.
Gathering together data from more than 50 sources, dataopedia.com is an aggregation web service that lets its users find out all the valuable facts about any website, such as traffic, online buzz, contact information, popularity in social bookmarking services…in short, all the essential facts about every website you can come across on the internet.
dataopedia.com has been conceived as the one-stop-resource for finding website facts, and the service can be accessed via the website, the mobile site, embeddable widgets for your website, and browser add-ons. Whatever suits you best and feels more comfortable to use. .