FreeBSD is a UN*X-like operating system for the x86 platform 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.
7.0 has been released: "The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 7.0-RELEASE. This is the first release from the 7-STABLE branch which introduces many new features along with many improvements to functionality present in the earlier branches.
Some of the highlights: dramatic improvements in performance and SMP scalability shown by various database and other benchmarks; the ULE scheduler is vastly improved, providing improved performance and interactive response; experimental support for Sun's ZFS file system; gjournal can be used to set up journaled file systems, gvirstor can be used as a virtualized storage provider; read-only support for the XFS file system; the Unionfs file system has been fixed...." Read the release announcement and release notes for further details.