Google Analytics is a service offered by Google that generates detailed statistics about a website's traffic and traffic sources and measures conversions and sales. Google Analytics can track visitors from all referrers, including search engines and social networks, direct visits and referring sites. It also displays advertisin...
KISSmetrics is a powerful web analytics solution that helps you to increase customer acquisition and retention rates, make smarter business decisions, and boost your bottom line.
nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.