Mono is a project led by Novell (formerly by Ximian) to create an Ecma standard compliant .NET compatible set of tools, including among others a C# compiler and a Common Language Runtime. Mono can be run on Linux, BSD, UNIX, Mac OS X, Solaris and Windows operating systems.
Microsoft has a version of .NET available for FreeBSD, Windows and Mac OS X called the Shared Source CLI (Rotor). Microsoft’s shared source license may be insufficient for the needs of the community (it explicitly forbids commercial use). The Mono project has many …

Wine is a software application which aims to allow Unix-like computer operating systems on the x86 architecture to execute programs that were originally written for Microsoft Windows. Wine also provides a software library known as Winelib which developers can compile Windows applications against in order to port them to Unix-like systems.
The name ‘Wine’ derives from the recursive acronym Wine Is Not an Emulator. While the name sometimes appears in the forms “WINE” and “wine”, the project developers have agreed to standardize on the form “Wine”.
The Wine developers released the first …