I have been aware of tarsnap for a long time, but only recently did I actually get around to using it for anything, as a result of my big personal digital resiliency audit for 2025. For those of you not in the know, tarsnap is “online backups for the truly paranoid”, and tarsnap the command-line program is the client-side tool you invoke to actually zip up and push your archives into the vault. Its creator, Dr. Colin Percival, is a really smart and interesting dude for a whole bunch of reasons. I’m led to believe the whole business is basically a two-man show between him and his brother these days.