Sakai - Historically, the community has aligned around a single project, the Sakai Collaboration and...
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!
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.
Edmodo - Where Learning Happens
ILIAS - For several of my clients in the health care domain, ILIAS turned out to be an excellent choice.
Google Classroom - Learning management tool by Google