I think everybody on here is constantly keeping an eye out for what to host next. Sometimes you spinup something which chugs along nicely but sometimes you find out you’ve been missing out.
For me it’s not very refreshing or new: Paperless-ngx. Never thought I would add all my administration to it. But it’s great. I probably can’t find the thing I need, but I should have a record of every mail or letter I’ve gotten. Close second is Wanderer. But I would like to have a little bit more features like adding recorded routes to view speed and compare with previous walks. But that’s not what it is intended for.
What is that service for you?
Syncthing. Decentralized data backup that works with minimal setup. Now I can add cloud sync to most any app.
Watch out to enable “keep on delete” features. I didn’t do that and didn’t see that gigabytes of personal photos got deleted which I had to recover from an old backup. Still don’t know how it happened as I only found out a few weeks after the fact.
Sync is not backup! If there’s a software bug or a wrong setting sync can delete your files. Syncthing is pretty mature so I doubt this was a Syncthing bug, however you shouldn’t only trust Syncthing. I’m doing btrfs snapshots weekly and delete them after three years for important folders nowadays.
I setup my own with a bash script for backup years ago that uses rsync, feel too invested in that now to change