DOS emulation software

ZSNES is an emulator for the Super Nintendo Entertainment System released as free software. There are official ports for Linux, MS-DOS, Windows, and unofficial ports for Xbox, and macOS.

FCEUX is an open-source Nintendo Entertainment System and Family Computer Disk System emulator. It is a merger of various forks of FCE Ultra.

The software program VICE, standing for VersatIle Commodore Emulator, is a free and cross platform emulator for Commodore's 8-bit computers. It runs on Linux, Amiga, Unix, MS-DOS, Win32, macOS, OS/2, RISC OS, QNX, GP2X, Pandora, Dingoo A320, Syllable, and BeOS host machines. VICE is free software, released under the GNU General Public License since 2004.