kubok

You could look into Group-Office. Their community edition is open source and free. Looking a your list, it ticks all the boxes. It is also in active development; the Docker image is updated almost weekly.

You are aware that the Luddite movement is not so much a reaction to new tech, but a reaction to the use, or rather abuse of said tech? As somebody who works in tech, I am not opposed by AI as a tool, but using it for the sake of using it does not solve anything.

…hard agree. Depending on use case, you do not need top notch hardware anyway. Also, degoogling a Fairphone is extremely easy.

It looks a bit like a stretched out century series jet. I do not dislike it.