Institutions and organizations can choose to install the Dataverse Network software for their own use. In this case, the institution will be responsible for maintaining the application; installing upgrades, setting up backups and data replication as needed. 

The Dataverse Network code is open-source and free

Installation packages in Sourceforge, for installers. Download the latest version of the Dataverse Network.

Source code in GitHub for developers/contributors.

Dataverse Network code base stats are available here on Ohloh.