PicoBSD
PicoBSD is a one floppy version of the BSD operating system descendant FreeBSD (version 3.0-current), which in its different variations allows you to have secure dialup access, small diskless router or even a dial-in server. And all this on only one standard 1.44MB floppy. It runs on a minimum 386SX CPU with 8MB of RAM (no harddisk required!).
With flexibility that FreeBSD gives, and full source code available, one can build a small installation performing various tasks, including (but not limited to):
- diskless workstation
- portable dial-up access solution
- custom demo-disk
- embedded controller (flash or EEPROM)
- firewall
- communication server
- replacement for commercial router
- diskless home-automation system
- and many others....
Most of the description above is from the PicoBSD website, which is located at http://people.freebsd.org/~picobsd/picobsd.html. See also the Small FreeBSD website at http://people.freebsd.org/~picobsd/.