Executor, from Abacus Research and Development, is a commercial DOS based Macintosh emulator. There were also versions for NextStep and Linux. Emulates a 68040 base Mac.

Tools for converting and running Windows applications in OS/2.

Insignia Solution SoftPC, or "SoftWindows" when bundled with Windows, is an x86 emulator UNIX and MacOS that enables them to run DOS and Windows. SoftWindows is unique in that it uses native CPU recompiled Windows binaries providing near native speed for some application. It was also ported to platforms such as SGI Irix, Sun Solaris, HP-UX, IBM AIX, NeXT, Motorola 88000, DEC VAX/VMS, DEC ULTRIX, and was the emulator used by Microsoft to run DOS and Windows 3.1 application on the DEC Alpha CPU Windows NT.

Virtual PC started off originally as an x86 emulator for PowerPC Macintosh to run MS-DOS and Microsoft Windows. Connectix, the company that made it, was purchased by Microsoft. Virtual PC was then retooled into a virtualization tool for x86 systems. Microsoft discontinued Virtual PC in favor of a server-oriented virtualization product called Hyper-V.

VirtualBox is an an x86 virtualization program.

VMWare is a commercial CPU virtualizer for commodity x86 systems. Unlike a PC emulator, CPU instructions are not interpreted, but rather run directly on the host CPU alongside any other native operating system and applications.