DOSBox - An open source DOS emulator for BeOS, Linux, Mac OS X, OS/2, and Windows. Primarily focuses on running DOS Games.
DOSEMU - An emulator of the Microsoft Disk Operating System (MS-DOS) for Linux/X11. Enables Linux to run many DOS programs - including some DPMI applications.
Flopper - A bootable-disk emulator - it reads a diskette image file (a file that includes all the sectors of a floppy disk) and boots it. This way, you can boot (and run) a bootable diskette off of your hard drive.
MacWindows - Solutions for integrating Macintosh and Windows.
Help build the largest human-edited
directory on the web.