Project Red October

Project Red October - Sun is giving JES, N1 and developer tools for free! And it looks like all of the software will be open sourced. It means that for example Sun Cluster or Messaging Server, C/C++ compilers, etc. are now free on all available platforms.

From official announcement:

MENLO PARK, CALIF; November 30, 2005 - Sun Microsystems, Inc. (NASDAQ: SUNW) today announced two landmark moves in the battle to create the software platform of choice for the next-generation of the Internet. First, having seen tremendous momentum with the Solaris Operating System (OS) as free and open source software, Sun is making the Java Enterprise System, Sun N1 Management software, and Sun developer tools available at no cost for both development and deployment and further, is reaffirming its commitment to open source this software. Second, Sun is announcing that it is integrating all of this software along with the Solaris OS into the Solaris Enterprise System, the only comprehensive and open infrastructure software platform available today.

All of Sun's server software is delivered in one pack and is called Solaris Enterprise System.