OpenEmu is probably one of my favorite projects at this time of writing (see video games)
me posing on GitHub:
This is an excellent research paper from the Heinz School at Carnegie Mellon University (CMU) that defines open source as an “extreme” form of Global Software Development (GSD) (not to be confused with “getting sh*t done”)
https://roamresearch.com/#/app/socialcommons/page/zXQIqoBOh (PDF)