Tiny Core Linux
Tiny Core Linux is a 10 MB graphical Linux desktop. It is based on the Linux 2.6 kernel, BusyBox, Tiny X, Fltk, and Flwm. The core runs entirely in memory and boots very quickly. The user has complete control over which applications and/or additional hardware to have supported, be it for a desktop, a nettop, an appliance or server; selectable from the project's online repository.