HypeStat - HypeStat is free statistics and analytics service, where you can find information about every website.
SimilarWeb - SimilarWeb.com is a website analysis tool that gives you analytics information for any website.
Aranking.io - Here is the best free Alexa rank alternative - Aranking! It provides Alexa ranking, traffic analytics, top keywords & competitor site analysis to grow your website.
Bullmask - Bullmask is a popular torrent search engine. It provides free Movies, Ebooks, Softwares and more. They offer free website stat tool with Bullmask Analyze.
cutestat - Website Stats and Valuation. CuteStat.
9Hits - 9Hits is an auto traffic exchange system with a lot of unique features. Support creating interaction such as clicking, scrolling, bypass captcha. Alexa ranking.