the German Unix User Group (GUUG) and took place from February 27 to March 2, 2007 at the Freie Universität Berlin in Germany. The 2008 OSDevCon was a joint effort of the GUUG and the Czech OpenSolaris User Group (CZOSUG) and look place June 25–27, 2008 in Prague, Czech Republic. The 2009 OSDevCon look place October 27–30, 2009, in Dresden, Germany. In 2007, Sun Microsystems organized the first OpenSolaris Developer Summit, which was held on the weekend of October 13, 2007, at the University of California, Santa Cruz in the United States. The 2008 OpenSolaris Developer Summit returned to UCSC on May 2–3, 2008, and took place immediately prior to the launch of Sun's new OpenSolaris distribution on May 5, 2008, at the CommunityOne conference in San Francisco, California. The first OpenSolaris Storage Summit was organized by Sun and held September 21, 2008, preceding the SNIA Storage Developer Conference (SDC), in Santa Clara, California. The second OpenSolaris Storage Summit preceded the USENIX Conference on File and Storage Technologies (FAST) on February 23, 2009, in San Francisco, United States. On November 3, 2009, a Solaris/OpenSolaris Security Summit was held by Sun in the Inner Harbor area of Baltimore, Maryland, preceding the Large Installation System Administration Conference (LISA). Ports PowerPC Port: Project Polaris, experimental PowerPC port, based on the previous porting effort, Project Pulsar from Sun Labs. OpenSolaris for System z, for IBM mainframes: Project Sirius, developed by Sine Nomine Associates, named as an analogy to Polaris. OpenSolaris on ARM Port OpenSolaris on MIPS Port Derivatives Notable derivatives include: illumos, a fully open source fork of the project, started in 2010 by a community of Sun OpenSolaris engineers and the NexentaOS support. Note that OpenSolaris was not 100% open source: Some drivers and some libraries were property of other companies that Sun (now Oracle) licensed and was not able to release. OpenIndiana, a project under the illumos umbrella aiming "... to become the defacto OpenSolaris distribution installed on production servers where security and bug fixes are required free of charge." NexentaStor, optimized for storage workloads, based on Nexenta OS OSDyson: illumos kernel with GNU userland and packages from Debian. Strives to become an official Debian port. SmartOS: Virtualization-centered derivative from Joyent. Discontinued Nexenta OS (discontinued October 31, 2012), first distribution based on Ubuntu userland with Solaris-derived kernel See also Comparison of OpenSolaris distributions Comparison of open source operating systems Image Packaging System