Run Windows applications on Linux, BSD, Solaris, and Mac OS X
Wine is an Open Source implementation of the Windows API on top of X and Unix. Wine provides both a development toolkit for porting Windows sources to Unix and a program loader, allowing many unmodified Windows binaries to run on x86-based Unixes.
Kigen is a RetroArch-based multi-emulator that allows emulating the Sega Master System, GameGear, Genesis, SegaCD, 32X, Sega Saturn and now Arcade using various libretro cores and supports advanced shaders such as color-duplicator2.
WineDiff makes it easier to install programs in Wine. WineDiff compares a Wine installation before and after a program is installed, and can replicate these differences in another Wine installation by creating a WineDiff Installation Package.