OpenSolaris.org focusses on the source code behind the Solaris operating system. Solaris Express is the binary releases of Solaris operating system builds.
See the FAQ "What is the difference between the OpenSolaris project and the Solaris Operating System?" http://www.opensolaris.org/os/about/faq/general_faq/#opensolaris-solaris It also explains the difference between the regular and 'Community Release' versions of Solaris Express. This message posted from opensolaris.org
