OpenSolaris is an operating system (OS), an open source project licensed under CDDL, and a community. The project's goals are innovation, collaboration, and the extension of OpenSolaris technology.

OpenSolaris is free, open source, and well-suited for desktops, laptops, servers, and data centers. The quality requirement of OpenSolaris is perhaps best stated as " Production Ready All The Time".

• BeleniX is a *NIX distribution that is built using the OpenSolaris source base.
• MartUX mBE BlastwaRe Edition is the first non-SXCR OpenSolaris distribution that is available both for SPARC and for x64/x86.
• NexentaOS is a complete GNU-based free and open source operating system built on top of the OpenSolaris kernel and runtime.
• SchilliX is an OpenSolaris based UNIX Live CD and distribution for the x86, x64 and EM64T architectures.
• Milax is a small size Live CD distribution which runs completely off a CD or a USB pendrive.