Looking through libraries of Free and Open Source Software (FOSS) projects on SourceForge for education software, Moodle stood out as the most popular. Moodle is a Course Management System — a free alternative to the likes of Blackboard. Impressively, Moodle has had a presence on SourceForge since 2001 and is still an active, stable project; it’s last update was just a couple days before this post.
Although Moodle has it’s own shortcomings, I’m strongly considering using it in future semesters because: (A) it provides a little more flexibility than Blackboard and (B) it provides me an opportunity to customize it even further since I have access to the code. I’ve been warned that it’s code is pretty ugly and not very extensible, but at least on principle I like the idea of building upon existing FOSS CMS.