SimilarWeb - SimilarWeb.com is a website analysis tool that gives you analytics information for any website.

Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.

Site Rank Data - View historical rank information of websites via time series charts.

Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.

Quantcast - Quantcast Corporation is a digital marketing company that provides free audience demographics measurement and delivers real-time advertising.

Bigtent - BigTent is a web-based organization and communication portal for groups.