DragonFly是一份作为FreeBSD-4.x系列在逻辑上的延续而设计的操作系统及应用环境。这些操作系统与Linux可归为相同的类别，因为它们都基于UNIX理念及应用程序接口。DragonFly是这条发展道路上的一个分支，可以说，是给了BSD一个向着不同于FreeBSD-5系列的崭新方向而发展的机会。

         Matthew Dillon has announced the release of DragonFly BSD 2.4, a general-purpose operating system originally forked from FreeBSD 4.x: "The DragonFly 2.4 release is here! Three release options are now available: a bare-bones CD image, a DVD image which includes a fully operational X environment, and a bare-bones bootable USB disk-key image. In addition we will for the first time be shipping a 64-bit ISO image. 64-bit support is stable but there will only be limited 'pkgsrc' support in this release. DragonFly BSD 2.4 is a bigger release than normal. The single most invasive change is the introduction of DEVFS. The /dev file system is now mounted by the kernel after it mounts the root file system. All major and minor numbers have changed and the old /dev is no longer meaningful." Read the detailed release announcement for a complete list of changes and upgrade notes. Download (MD5): dfly-gui-2.4.0_REL.iso.gz (722MB), dfly-2.4.0_REL.img.gz (217MB), dfly-amd64-2.4.0_REL.iso.gz (219MB).（责任编辑：A6）