phpMyBaseball is a web-based system for keeping batting statistics for one team or for hosting the stats for more than one team. Teams and players are added through an administrator page. All stats can be viewed by anyone visiting the site.
SportStat is a web based application (PHP/MySQL) for the recording and analysis of sports statistics. It was designed to be used by high school teams and athletic departments.
Statfink is a fantasy (American) football statistics tracker and live scoring program written in PHP. Currently best suited to work with leagues hosted at Yahoo. Meant to be run by one member of the league and to let the rest of the members to view the output.