Open edX - Open edX is implemented mostly in Python (with some Ruby and NodeJS as well) and the code is being...
Invenio - Invenio is a free, open-source software to run a digital library or document repository on the web.
LMS Collaborator - LMS Collaborator is a state-of-the-art learning management system designed to meet the need for corporate training, upskilling, and evaluation with flexible integration abilities.
Greenstone Digital Library - Greenstone is a suite of software tools for building and distributing digital library collections...
ILIAS - For several of my clients in the health care domain, ILIAS turned out to be an excellent choice.
Koha - Koha is the first free and open source software library automation package (ILS).