TL;DR: I accidentally deleted the old repository with 107 stars, and have moved the project to GitLab because GitHub requires a paid account to recover deleted repositories. I take full responsibility for this, it was an extremely stupid mistake on my part. I deeply apologize for the inconvenience. I understand if this damages the trust in the project.
I appreciate all the support you all have given towards the project, it truly means a lot to me! For those of you who bookmarked the repo, please update it to the new GitLab page which will now be actively maintained.
If you don't know what Open Source Everything is, see my original post. It's my own curated list of open source software.
Update: GitHub was able to restore the repository! Special thanks to Seve from GitHub Support for bending the rules a bit. GitLab will still be the primary place where the repository is hosted.
Good to know! What would you like me to call the section for draw.io, since it is still great software?
Not sure, maybe "diagramming". Btw there is a good alternative to draw.io for self-hosting called Excalidraw. Very easy to set up with docker.