My universities computer science, physics and math departments use Sakai [1] instead of the university blackboard and I quiet like it. It's FOSS and works well

My universities computer science, physics and math departments use Sakai [1] instead of the university blackboard and I quiet like it. It's FOSS and works well on mobile (in contrast to the universities blackboard system) [1] https://github.com/sakaiproject/sakai https://github.com/sakaiproject/sakai