Try edu-sharing yourself
edu-sharing Demo
Where do you want to start?
Username: teacher | Password: tree
try the edu-sharing plug-ins
Username: teacher | Password: tree
Preview
Plug-Ins and connectors to edu-sharing, which are currently in development.

OnlyOffice
Manage text documents, spreadsheets and presentations online.

TYPO3
Include and use materials and 'smart searches' in TYPO3 web pages.