SABnzbd - SABnzbd is a free/open-source cross-platform binary newsreader written in Python.
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
NZBGet - The most efficient usenet downloader.
Clever - syncing between education applications for K-12 schools
GrabIt - GrabIt is a free application that enables you to easily find and download content from Usenet news...
Claroline - Claroline is a collaborative eLearning and eWorking platform.