Homepage is great, especially if the services are deployed on docker or Kubernetes. You can just add some metadata to each service and Homepage will automatically pick them up. No need to remember to update it directly for a new service.

I got a Venstar T2000. Its at a decent price point, HAOS has built in support for it, and it can work entirely without internet.

An easy option is VaultWarden. Pretty painless to host AND it’ll store your passwords. There are probably better dedicated tools, but it’s functionality is pretty solid.

I haven’t used it, but agendav - https://github.com/agendav/agendav looks like it might be what you’re looking for. There are similar projects for iCal format, which many calendar apps can emit as well.

It’s disappointing that this is the highest voted comment on a thread in the selfhosted topic…