Redmine is a flexible project management and issue tracking Web application. It supports multiple projects, flexible role based access control, Gantt charts and calendars, news, document, and file management, feeds and email notifications, per-project wikis and forums, time tracking, custom fields for issues, time entries, projects, and users, SCM integration (SVN, CVS, Git, Mercurial, Bazaar, and Darcs), issue creation via email, multiple LDAP authentication support, user self-registration support, multi-language support, and multiple database support.
DevContest is a tool for teachers of programming that makes it possible to create programming contests for your students. You prepare tasks, a description of them, an examle of the input and output, and a Python script that generates input and output. Students send their source code to the server and the system decides if they work well..
ff3sudoku is an add-on that features an engine for playing Sudoku puzzles. It can generate random puzzles, but it also detects and imports Sudokus from several Web sites, including websudoku.com, sudokupuzz.com, sudoku.com.au, and others. There is also a stand-alone version working in Firefox 3+ and GoogleChrome.
UniMatrix is an application for planning your everyday business at university. It helps you to manage your lessons and exams. The program starts up by presenting you with your upcoming lessons, and it can show all necessary information on one screen. Internationalized versions are available.