I have an old i3 PC that I’d like to useas a NAS but I’d prefer to use FOSS instead as realistically I don’t know even this is even the solution I want to go with and would rather avoid dropping a lot of money on something I may change.
EDIT: Thanks everyone for the suggestions. I will be bookmarking them all. Probably give TrueNAS a go first since I’ve heard of it before. (I think from LTT.)
Proxmox
Edit: Installed as the hypervisor on bare metal and then whatever you want to try out like OMV, Plex, jellyfin, syncthing or cloud software in an LXC or VM
Turnkeys are super useful too