eLML (eLesson Markup Language)

OLAT   (Compare Project)

License: apache_2

Chamilo LMS   (Compare Project)

Mostly written in JavaScript

License: ccbysa3-0, gpl3_or_later

Claroline   (Compare Project)

License: gpl

Moodle   (Compare Project)

Mostly written in PHP

License: gpl

OpenOlat   (Compare Project)

Mostly written in Java

License: apache_2

LAMS   (Compare Project)

Mostly written in Java

License: GNU-GPLv2

ILIAS   (Compare Project)

License: Unknown

eFront - Refreshing eLearning   (Compare Project)

License: cpal

SWAD   (Compare Project)

Mostly written in C

License: AGPL3

DFWiki   (Compare Project)

License: gpl