FreeBSD 8.3 is the fourth release from the 8-STABLE branch which improves on the functionality of FreeBSD 8.2 and introduces some new features. Some of the highlights: usb(4) now supports the USB packet filter; TCP/IP stack now supports the mod_cc(9) pluggable congestion control framework; graid(8) GEOM class added to support various BIOS-based software RAID controllers (replacement for ataraid(4)); ZFS subsystem updated to SPA version 28; GNOME version 2.32.1, KDE version 4.7.4. FreeBSD 8.3-RELEASE is now available for the amd64, i386, pc98, and sparc64 architectures.
FreeBSD is a UNIX-like operating system for the i386, amd64, IA-64, arm, MIPS, powerpc, ppc64, PC-98 and UltraSPARC platforms based on U.C. Berkeley's "4.4BSD-Lite" release, with some "4.4BSD-Lite2" enhancements. It is also based indirectly on William Jolitz's port of U.C. Berkeley's "Net/2" to the i386, known as "386BSD", though very little of the 386BSD code remains. FreeBSD is used by companies, Internet Service Providers, researchers, computer professionals, students and home users all over the world in their work, education and recreation. FreeBSD comes with over 20,000 packages (pre-compiled software that is bundled for easy installation), covering a wide range of areas: from server software, databases and web servers, to desktop software, games, web browsers and business software - all free and easy to install.