The delights of FOSS citizenship:
I just saw a program I wrote 25 years ago, cvs2cl, referenced as an optional dependency by Gource, which is itself not young but which happened to be on the front page of Hacker News today for some reason.
And the Gource documentation doesn't even need to link to cvs2cl's home page, because it can assume that cvs2cl is available in your OS distribution's packaging system (which it is, if you're on any of the major distributions).
Warms the cockles of my hearty-heart-heart on a cold January day.