Invenio - Invenio is a free, open-source software to run a digital library or document repository on the web.
Abstract - A secure, version-controlled hub for your design files
Greenstone Digital Library - Greenstone is a suite of software tools for building and distributing digital library collections...
Kactus - Design version control without changing your tools
Koha - Koha is the first free and open source software library automation package (ILS).
Git Sketch Plugin - Version control for designers