NexentaOS is a complete GNU-based open source operating system built on top of the OpenSolaris kernel and runtime.

It is a result of our inspiration and desire to build a great system based on the best existing software: SunOS kernel and GNU software. We use Debian - one of the best existing software distribution/packaging mechanisms - to glue the numerous pieces together. At the moment, Nexenta is not part of the Debian Project. Our packages are not present in the Debian database. We are hoping that in the future this will change and our packages will get their "upstream acceptance".

http://www.gnusolaris.org/

The best of Linux is its usability that comes with huge amount of high-quality open source software developed over the last two decades.

The best of Solaris is its security, stability, scalability, reliability, and availability for the Fortune 2000 enterprise where Solaris is still a king.

Edit:
Finally Release 1.0 is available to download!
And the site has moved to a new domain.

http://www.nexenta.org/