OpenIndiana
OpenIndiana is a free and open-source, Unix operating system derived from OpenSolaris. Developers forked OpenSolaris after Oracle Corporation discontinued it, in order to continue development and distribution of the source code. The OpenIndiana project is stewarded by the illumos Foundation, which also stewards the illumos operating system. OpenIndiana's developers strive to make it "the defacto OpenSolaris distribution installed on production servers where security and bug fixes are required free of charge".
History
Origins
Project Indiana was originally conceived by Sun Microsystems, to construct a binary distribution around the OpenSolaris source code base.
OpenIndiana was conceived after negotiations of a takeover of Sun Microsystems by Oracle were proceeding, in order to ensure continued availability and further development of an OpenSolaris-based OS, as it is widely used. Uncertainty among the OpenSolaris development community led some developers to form tentative plans for a fork of the existing codebase.