TortoiseSVN - The coolest interface to (Sub)version control
Invenio - Invenio is a free, open-source software to run a digital library or document repository on the web.
SnailSVN - Similar to Tortoise SVN for Windows but integrated into Finder
Greenstone Digital Library - Greenstone is a suite of software tools for building and distributing digital library collections...
RapidSVN - CollabNet, Facilitating Collaborative Software Development
Koha - Koha is the first free and open source software library automation package (ILS).