I’ve got a Nextcloud instance that I’ve run for a few years. Love it. At home I have an Odroid H3+ with 64GB of ram running Openmediavault. Got about a dozen containers running on that. I need to play with it more and use that ram. I did try to get Boinc running on it but it, sadly, kept shutting down. I’ll have to find a another way to contribute to science.
I’d also like to add that Forgejo is working on federation along with GitLab. I think Forgejo will do it first though.