SimilarSites - Easily find more sites like those you like.
cutestat - Website Stats and Valuation. CuteStat.
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
WebsiteOutlook - WebsiteOutlook is an all-in-one website that provides you detailed information on famous websites based on various data sources like traffic, page rank, and estimated ad revenue.
SimilarStores - SimilarStores is a free tool that helps you to find similar stores to any store!
Site Worth traffic - Site Worth traffic is a cost-effective site that is introduced to estimate the value, daily page views, daily visitors, and daily revenue of a website.