ZID offers plenty of services. You might especially be interested in:

• BSCW: Collaboration Server for File-Exchange, Wikis, …:
  https://bscw.uibk.ac.at/
• CallTrough: University offers private phonecalls at reduced rates (also supports SIP):
  -> Private Calls
• DropInn, a very simple FTP-based DropBox-Alternative, a Fileserver, FTP-Service, …
  -> FileSharing
  
• ACOnet (cooperation of Austrian Universities) offers a similar service to share big files. FileSender
• Version Control Systems:
  SVN: https://zid-lvcs.uibk.ac.at
  GIT: https://git.uibk.ac.at
• Confluence Wiki https://wiki.uibk.ac.at/
• Doodle-alternative https://framadate.uibk.ac.at/
• ZID Ticketsystem https://zid-ts.uibk.ac.at/
• Backup via TSM
• Storage Space

For a full list of services ZID has to offer see: http://www.uibk.ac.at/zid/services/services.xsql