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OpenSolaris is an open source project created by Sun Microsystems to build a developer community around Solaris Operating System technology. The project is aimed at developers, system administrators, and users who want to develop and improve operating systems. As of April 2007, over 40,000 community members are registered on OpenSolaris.org, of whom over 11,000 are not Sun employees. An active OpenSolaris User Group community is now growing worldwide, and dozens of OpenSolaris technology communities and projects are being formed on opensolaris.org.