High Quality Content by WIKIPEDIA articles! SoftPC and SoftWindows were software emulators of x86 hardware. The emulators were developed by Insignia Solutions. Available originally on UNIX workstations to run MS-DOS, the software eventually was ported to Mac OS and also gained the ability to run Windows software. Besides Mac OS, supported platforms included SGI IRIX, Sun Solaris, HP-UX, IBM AIX, NeXT, Motorola 88000, DEC VAX, DEC ULTRIX, and others.