OsnofianLinux is a set of small distributions intended to fit on 1.44Mb floppy disk, in the boot sector of a CDROM, hard drive or even on a USB stick. Check the project homepage for more details and projects info.
JTAG-O-MAT is a simple but highly configurable command line tool for Win32 and Linux based PCs, mainly used to upload initial software to virgin embedded system via a JTAG interface.