StatCounter - StatCounter is a simple but powerful real-time web analytics service that helps you track, analyse and understand your visitors so you can make good decisions to become more successful online.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Histats - Start tracking your visitors in 1 minute!
SEOmator - SEO website analysis & audit tool
AFSAnalytics - AFSAnalytics.
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.