Small Update:

I set up Radicale as a replacement for EteSync (as it seems development has stalled, and I am paying for the VPS anyway) and so far it works great. Getting a “shared” calendar to work with symlinks was not that intuitive in a Podman setup, but I got it to work. Thanks for the suggestion!

The chance that I will do anything else but reading when using my phone is big, so the sync maybe not as relevant. That said, using KOReader with a centralized ebook library still sounds really useful. Thanks!

No, so far I just hope nothing breaks :) will take a look!

With so many recommendations in this thread, Forgejo must be great. I've used it with Codeberg, but self-hosting seems a lot better (especially if they introduce federation at some point).

Thanks!

Thanks! I thought Syncthing does not use central servers? Whats the benefit of using one?

Thanks! I own an e-reader, but as the stock software has served me well so far, I haven't had any reason to switch. Is KOReader worth it?

Nice! I think XMPP is the best approach to messaging, as it is decentralized and can be E2E (and more mature than e.g. Matrix). The problem is that I won't be able to convince anyone I know to use XMPP (Signal was a huge struggle already).