TCExam enables educators and trainers to author, schedule, deliver, and report on surveys, quizzes, tests and exams.
XDM (eXtendable Download Manager) is a plugin based media collection manager. It is highly extensible with both internal & 3rd party plugins.
Geeklog is for managing dynamic web content. Out of the box it is a blog engine, or a CMS and all the vital features of such a system.