Quantcast helps advertisers and publishers better understand, find and access targeted audiences in real-time. Marketers use Quantcast to amplify their targeting and reach consumers who look just like their best performing customers with unprecedented performance and scale. Publishers use Quantcast to directly measure and packag...
WordPress.com Stats lets you know how many visits your site gets, and what posts and pages are most popular.
A semantic personal publishing platform with a focus on aesthetics, web standards, and usability.
nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.