About illumos

illumos is the fully open community fork of the OpenSolaris operating system. It was founded by Garrett D’Amore:

Garrett D’Amore speaks at SCALE10x about the genesis of illumos.
4 part playlist, total running time ~55 mins
slides

Some of the history behind it all and the philosophy by which this community operates were expounded by Bryan Cantrill in his talk at LISA11:

Slides here.