Invenio - Invenio is a free, open-source software to run a digital library or document repository on the web.
Syncthing - Syncthing replaces proprietary sync and cloud services with something open, trustworthy and...
Greenstone Digital Library - Greenstone is a suite of software tools for building and distributing digital library collections...
Dropbox - Online Sync and File Sharing
Koha - Koha is the first free and open source software library automation package (ILS).
Microsoft OneDrive - Secure access, sharing & file storage