ArchBang is a simple GNU/Linux distribution which provides you with a lightweight Arch Linux system combined with the OpenBox window manager.
Suitable for both desktop and portable systems - It is fast, stable, and always up to date. You can customize your install to suit your needs, and draw on the vast resources & knowledge of the Arch Linux community. The download page has links to both 32 & 64 bit versions, bootable as a live CD / USB - allowing you to easily test it out before doing a full install.
ArchBang is a derivative (spin-off) of ArchLinux it uses a minimal Arch system and adds an Openbox Window Manager with ArchBang scripts and configuration files. ArchBang is separate from Arch Linux and is in no way affiliated.
With Arch Linux, there is a fair amount of post-installation work to be done to build a functional desktop environment once the base Arch system is installed. With ArchBang, installation includes the base Arch system, and Openbox desktop environment. The ArchBang user skips the post installation work to have a functional desktop.