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.
Sitebeam - Spelling mistakes, SEO, load speed, social media, code, W3C, accessibility & more in one tool.
Histats - Start tracking your visitors in 1 minute!
Condorly - Condorly offers conversion rate optimization and personalization services to turn most website visitors into qualified leads.
AFSAnalytics - AFSAnalytics.
Ryte - Ryte is a web-based software invented for technical optimization for search engines and improvement of websites.