dProjects is a really simple centralized web and rsync based version control system for small groups. The clients can initiate the file movements from the web interface.
An web system for small university courses, typically postgrad. Simple to install/maintain, easy for "teachers" with any scripting skills to extend. Alternative to big-iron VLEs/LMSs. Forums, quizzes, timetables, cms, year and user management, etc.