OpenIndiana is a distribution of illumos, which is a community fork of OpenSolaris. And OpenSolaris itself was the open source version of Solaris, before it was discontinued by Oracle, after Oracle acquired Sun Microsystems, Inc., in January 2010.

OpenIndiana Build 151a is the latest development release, and the third so far. A stable edition is slated for release before the end of this year.

There is a desktop edition and a server edition. This review is based on test installations of the desktop edition.