I have been running this for a year on my old HP EliteDesk 800 SFF (G2) with 64GB RAM, and it performes great on the smallest models (up til 8B) only on CPU. I run Ollama and OpenWebUI in containers/LXC in Proxmox. It’s not as smart as ChatGPT, but it can be suprisingly capable for everyday tasks!
OtterWiki looks awesome! The combination of markdown, git and a web interface is powerful.
I use Navidrome, it’s a single binary and gives you your own Spotify, kinda. It can be use with many other apps, in addition to the web interface, as it supports the subsonic protocol.
Symfonium looks cool, especially the support for DNLA, but it is not open source and not available on F-droid.
Castopod is great for hosting a podcast :)
I think this is where Anytype (https://anytype.io/) is headed!
In that case, I can recommend minicomputer’s like HP EliteDesk G2 800 Mini. You can get them with a variety of intel CPUs, they can take up to 32GB RAM, they have slot for M.2 disks and a regular 2.5" SSD – and they hardly use any power when idle, between 5 to 10 watts, depending on the CPU and CPU governor settings. They are sold used for ~€50 and if you buy newer generations you’ll get even more umpfh for a bit more cash.
In other words, very competetive with the Pi’s, only more available, cheaper and about the same power consumption!
It has RSS built-in, but since it is a static site generator, it does not support ActivityPub out of the box. But I do think I have seen implementations with some custom JavaScript.