Delightful Dude

Nextcloud is federated?

https://nextcloud.com/blog/federation-a-foundational-concept-for-digital-sovereignty/

I understand! I know there is a lot of hype about Discord, especially young people love it. Despite all the features, isn’t Discord just a chat software? Reading your answer, I think you are looking for a forum software (not chat) 😄 Have you looked at Discourse? It is open source, offers a modern, hierarchical structure with categories and subcategories, extensive permission systems and role management. It is specifically designed for larger communities and allows easy management of moderators and admins.

Matrix is horrible for large communities

Interesting, what issues did you have? How large are those communities?

Voilá: https://www.spacefun.ch/icefun

Great! I think I have a Asus Transformer Pad lying around, I might give it a shot!

Desktop/Laptop: Ncmpcpp + mopidy-mpd + jellyfin-plugin

Mobile: Finamp

Homeserver: Jellyfin

With this setup I’m able to manage and play my playlists on every device.

Audacious + Winamp skin works great!

As an Arch Linux user on every thinkpad I own: what the heck is a chromebook?