Solaris

Solaris is a Unix operating system is known for its  scalability, especially on SPARC systems, and for originating many innovative features such as DTrace, ZFS and Time Slider. It supports  SPARC, workstations and servers from Oracle and other vendors. It  registered as compliant with the Single UNIX Specification.

Solaris was developed by Sun Microsystems, was was developed as proprietary software. In 2005 released most of the codebase under the CDDL license, and founded the OpenSolaris open-source project. With OpenSolaris, It wanted to build a developer and user community around the software. After the takeover of Sun Microsystems in January 2010, Oracle decided to discontinue the OpenSolaris distribution and the development model.

In 2010 Oracle discontinued providing public updates to the source code of the Solaris kernel, effectively turning Solaris 11 back into a closed source proprietary operating system.

In 2011 there are 11 kernel source code leaked to BitTorrent However, through the Oracle Technology Network (OTN), industry partners can still gain access to the in-development Solaris source code.