أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Blackboard is high end LMS. It is a paid per user solution.
Moodle is the best choice for free open source solution.
As one is paid and the other is free, you need to balance between both.
Blackboard costs about $ per user annually.