I am the author of Basic App CMS. This is an open-source module system, which I created on CodeIgniter 4. Since 2018, the system has evolved from a simple set of classes for quick creating CRUD controllers, to a finished platform for creating sites.
I took Yii 2.0 Advanced Application Template as a source, and transferred it to CodeIgniter 4. Now, CodeIgniter 4 users can start their projects already having the basis for registration, authorization, confirmation of e-mail address, password recovery, and user account – instead of starting it all from scratch.
These are the main open source projects which I currently support. You can find my other developments for CodeIgniter 4 in my repository on GitHub.