PostX Gnu/Linux 0.4. is released as 32-bit and 64-bit now. The window manager is Openbox and the overall system is lightweight and can fit to a cd.64-bit iso size is: 545 megabytes.
32.bit iso size is: 559 megabytes,There are plenty of customizations on board along with a set of programs designed for a lightweigth desktop usage. One thing in particular to note is that eventhough PostX is based on Debian Stable it uses OpenRC as an init system.Get more information and download from here: http://www.techtimejourney.net/postx-gnulinux-0-4-arrives-32-bit-and-64-bit/Enjoy and give feedback :)