I've been using jellyfin for a few months and generally really happy with it - it's got a lot of useful features and a really nice interface. The main issue I've found is my poor rockpro64 can't seem to handle real-time transcoding and I haven't been able to figure out how to turn it off...

I need using this since moving from Plex . It not quite as good but at least it's all local and open source.