Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
Optimizely - A/B testing you'll actually use.
GoSquared - GoSquared Real-Time Web Analytics. See who's reading, commenting, joining, or buying on your website right now. Watch your traffic unfold.
Evolv - Evolv is the visual editor for web-based projects that are used to find better ways to connect with customers in order to improve marketing economics.
WireBoard.io - The best of reporting and real-time web analytics combined.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.