I use https://wekan.github.io/ for tracking items to repair.

Linkding which is like pinboard but self hosted. Just because it’s simple. I could do with just using browser sync but hey, I’ve got a server running so I might as well host it

Ah yes. Good point. I haven’t used it myself yet as I’ve not had reason too. Just on my list of Tailscale things to try out

Wouldn’t Tailscale funnel achieve what they want? https://tailscale.com/kb/1223/funnel

As an aside you can use Nextcloud’s WebDAV to sync Joplin if you wanted to reduce the number of services running on your server. Not sure how it compares in performance though.

Nextcloud has the file system available via WebDAV. Mount the WebDAV to a local mount and go from there perhaps?

Easiest way would be to use the Nextcloud desktop app which will mount your Nextcloud and present them inside nautilus for you to do as you wish.