Is it possible that the "Tor metrics" count everything but "Linux" and "Windows" as FreeBSD?
Good question. Not exactly: it's counting everything containing "BSD" as "FreeBSD". Ugh. I agree that this is misleading. How about we change the graph legend to "BSD"?
+1
Without further explanation that seems still a bit misleading because "DragonFly" and "Bitrig" are BSDs, too. In fact, "DragonFly" is short for "DragonFly BSD" so even a graph legend like "platforms that contain 'BSD'" would be misleading for someone who does not know the actual platform strings.
How about adding Bitrig and DragonFly as well, see: https://trac.torproject.org/projects/tor/ticket/14862#comment:4