I’m using Bookstack for myself as well as for work and I love it. It may not have all the features some of the others mentioned here do but there is beauty in its simplicity. It gets out of my way but still has a few power user features.

I’ll throw in my vote for Kavita. Works great. I read a lot on my phone so I just saved the app shortcut to my home screen from Firefox.

Mine machines are all named after Final Fantasy Summons/Espers/Eidolons/Aeons/Primals.

My main proxmox node is Bahamut. I try to pick a suitable summon that matches the host but that doesn’t always work.