The sort of program that once set up, just ticks along without fuss or bother forever.
For me, as I’m replacing the vms today which I set up five years ago and haven’t needed to touch since;
- HAProxy
- KeepaliveD
Not easy to learn, but once they’re running, they both go on forever.


Syncthing. Absolutely ace bit of software. I remember it being a little questionable in 2013, but today it performs exactly the same task, just more reliably. Love it.
Good shout! I use syncthing myself to sync all my useful stuff between multiple devices seamlessly.
Yep I love it. It’s how I keep my password manager synced between devices. It can be finicky to set up but just works without thinking after that.