Edmodo LMS!

Moodle is an open source Course Management System (CMS), also known as a Learning Management System (LMS) or a Virtual Learning Environment (VLE). It has become very popular among educators around the world as a tool for creating online dynamic web sites for their students. To work, it needs to be installed on a web server somewhere, either on one of your own computers or one at a web hosting company.

Chamilo is an open-source (under GNU/GPL licensing) e-learning and content management system, aimed at improving access to education and knowledge globally. It is backed up by the Chamilo Association, which has goals including the promotion of the software, the maintenance of a clear communication channel and the building of a network of services providers and software contributors.

SWAD (Shared Workspace At a Distance) is a free-software, fast and efficient Learning Management System (LMS) for distance learning and teaching management. It has been developed and used at the University of Granada (Spain) since 1999. Since 2012 it is used in other universities and also in the cloud (https://openswad.org/ )

Canvas is the new, open source learning management system that's revolutionizing the way we educate. Easy to learn, easy to use.

Open edX is implemented mostly in Python (with some Ruby and NodeJS as well) and the code is being made available under an AGPL license.

Geenio is a cloud-based platform created for people who want to build e-learning process for company internal or external project from the scratch with the least efforts and pain.

Historically, the community has aligned around a single project, the Sakai Collaboration and Learning Environment (CLE). This project has also drawn in the Open Source Portfolio (OSP), including it in the Sakai CLE.

Every class is on a mission. Google Classroom is mission control, designed with teachers and students to connect the class, track their progress and achieve more together. Create classes, distribute assignments, send feedback, and see everything in one place. Instant. Paperless. Easy. So students can stay organised. Everything in one place. Join the class in one click and then have all of the materials at your fingertips.

The edx-platform is the main repository of edX Code covering both the LMS and the authoring tool, Studio. It also includes XModules and various graders.

An open-source eLearning platform.

haiku LMS is a Web 2.0 lesson-centric learning management system built to bring the advantages of the web to your classes. We believe that haiku LMS is the most elegant way to extend your teaching onto the web, bar none. Create online lessons with articles, images, audio, and video for your class. Manage discussions, auto-grade assessments, and track scores through a gradebook.

eFront is an easy to use, visually attractive, SCORM certified, eLearning and Human Development Platform.

ADA stands for Ambiente Digitale di Apprendimento. It is a knowledge and e-learning management system that allows you to create, administer and follow courses via the Internet or intranet with ease and flexibility.

Open Elms is an open source total e-learning solution which includes an e-learning Learning Management System (e-LMS) and Content Management System (e-CMS) for rapid application development. Open Elms is open source so it is an entirely free e-learning system.