Comment by mikewarot

As a Hoosier... I had to check the relevance... and learned it's basically a fork^3 of Solaris, a Sun operating system.

OpenIndiana[3] <-- Illumos[2] <-- OpenSolaris[1] <-- Solaris[0]

Note: I guessed here at <-- meaning fork of... any other options I should have used instead?

[3] https://en.wikipedia.org/wiki/OpenIndiana

[2] https://en.wikipedia.org/wiki/Illumos

[1] https://en.wikipedia.org/wiki/OpenSolaris

[0] https://en.wikipedia.org/wiki/Oracle_Solaris