Smart Boot Manager
"Smart Boot Manager (SBM) is an OS independent and full-featured boot manager with an easy-to-use user interface. There are some screen shots available.
The main goals of SBM are Absolutly OS independent, Flexable and Full-Featured. It has all of the features needed to boot a variety of OSes from several kinds of media, while keeping its size no more than 30K bytes. In another words, SBM does NOT touch any of your partitions, it totally fits into the first track (the hidden track) of your harddisk!
SBM now supports booting from floppy, harddisk and CD-ROM. ZIP and LS-120 are planned to be supported recently"