Tiny Core Linux is a very small (10 MB) minimal Linux Desktop. It is based on Linux 2.6 kernel, Busybox, Tiny X, Fltk, and Jwm. The core runs entirely in ram and boots very quickly.The distro has a discussion forum and an own small wiki.
It is not a complete desktop nor is all hardware completely supported. It represents only the core needed to boot into a very minimal X desktop typically with wired internet access.
Tiny Core Linux is a new ultralight distro
Tiny Core Linux is a new ultralight Linux distribution that packs everything one needs for browsing the web in 10 Mb. From the web page of the distro: