OpenSolaris is a discontinued, open source computer operating system based on Solaris created by Sun Microsystems. It was also the name of the project initiated by Sun to build a developer and user community around the software. After the acquisition of Sun Microsystems in 2010, Oracle decided to discontinue open development of the core software, and replaced the OpenSolaris distribution model with the proprietary Solaris Express.
NB:- Latest stable version of the software will be delivered.
OpenSolaris 2009.06 has been released: "Today marks the release of OpenSolaris 2009.06, the third release of the OpenSolaris operating system. We've shifted gear, bringing you a new set of features right to your door, from the desktop to the data center. New features: network virtualization with Crossbow; turn any host into a SCSI target with COMSTAR; host virtual guests using xVM Hypervisor or LDoms; SPARC support for Distro Constructor, Auto Install, and Snap; Intel Xeon 5500 processor support with deep power management; MySQL and PHP DTrace probes in the WebStack; improved usability of the package management system; ZFS Time Slider snapshot management; contribute new applications with SourceJuicer; Get 24/7 support with OpenSolaris subscriptions.".