Limbo moreso than Alef.

And Plan9's C dialect is also under Rob's tutelage.

I was being ironic. Never saw Plan 9 and its eco-system having any commercial success.

Actually, I wonder how much money Vita Nuova makes out from Inferno.

Vita Nuova is now just one guy, Charles, but I know he makes a living himself working on/consulting for the systems I mentioned. His colleague Rog Peppe, now works for Canonical doing Go.

As I mentioned, Plan9 is used on a few super computer systems for IBM and the DoD.