https://getvale.org/try-vale

We used WordPress ourselves but struggled with ongoing maintenance. So we built an internal alternative CMS that met our needs. After two years of development, we decided to make it open source.

You can try the live demo (credentials included), explore the source code, and read the documentation here:

Source: https://github.com/MIDILLI-Tech/vale/ Docs: https://docs.getvale.org

If you have any feedback, comments, or questions, I'd be happy to answer them!