@abcdw

That's a great point and I very much agree on your list, those would be my top choices too indeed.

Other projects that come to mind: #borg, #borgmatic, #autossh - not implying that they're not actively developed, just that they feel like solid components that I tend to set up and then rarely interact with.

A bit more low-level and niche, but same for: #isync, #msmtp, #direnv.

borgbackup.org/
torsion.org/borgmatic/
harding.motd.ca/autossh/
isync.sourceforge.io/
marlam.de/msmtp/
direnv.net/