Apple
- Apple II ProDOS
- Apple Macintosh OS 10.1
Commodore
- CP/M for Commodore 64
- Amiga OS 3.5
DOS
- IBM DOS
- UniSys Icon
NeXT
- NeXT NEXTSTEP Academic Bundle - NeXT Computers
- NeXT NEXTSTEP Academic Bundle - HP 9000
IBM OS/2
- IBM Os/2 Warp
- IBM OS/2 2.0
Microsoft Windows
- Microsoft Windows 1.0
- Microsoft Windows 1.1
- Microsoft Windows/386 (Windows 2.0)
- Microsoft Windows 95 (upgrade)
- Microsoft Windows NT Workstation
- Microsoft Windows ME
- Silicon Graphics Inc IRIX
Sun Microsystems
- SUN Microsystems Java Operating System
- SUN Microsystems Solaris (2.4, 2.5, 7, 8, 9)
Unix/Linux
- Linex (Corel, RedHat)
- HP-UX
- Digitial UNIX
- Novel UnixWare
- AT&T Unix PC Operating System
Other - GUI Replacements (Desktop Manager for Windows)
- Tektronix WinDD
- HP NewWave 4.0
- DESQview/X
Windows Emulators
- Virtual PC for Mac
- Soft Windows for Unix