Yonas CMS is a content management system (CMS) I made years ago, while learning PHP. This is a beta version I found lying around, I'll try to find the latest version I made and update the repository. In any case, I'm creating this repository mostly just for myself, the cms probably has bugs and security flaws and may not even work anymore, so it's probably not a good choice to use it to run a public website.
Here's a video I made when I was using it showing the cms running :
More info from the original "Readme":
Initially developed to manage my own website, I am releasing this free (as in freedom) version, so anyone can benefit from it (using it to manage a site, learning from the code...)
This is a Beta version, it's functional but still has a few number of bugs to be repaired and new features to be implemented. It's open source, so I hope you can at least benefit from reading the source code.