The DragonFly BSD operating system is a server oriented project. Though originally forked from FreeBSD, DragonFly BSD is an independent operating system that carries a number of unique features, foremost among them is the HammerFS file system. DragonFly BSD 4.0 was released on November 25th and offers several new features.
Version 4 of DragonFly brings Haswell graphics support, 3D acceleration, and improved performance in extremely high-traffic networks. DragonFly now supports up to 256 CPUs, Haswell graphics (i915), concurrent pf operation.
The latest version of DragonFly BSD no longer supports 32-bit x86 machines and is designed to work exclusively on the 64-bit x86 architecture.