Visual Basic

On Windows, put:

Module HalloWelt Sub Main Console.WriteLine("Hallo, Welt!") End Sub

End Module

in a textfile with any texteditor, save it as fnord.vb

then on a cmd.exe ,type:

 C:\%SystemRoot%\Microsoft.NET\Framework\v2.0.50727\vbc.exe fnord.vb (or wherever you have vbc.exe, which is the visual basic compiler) (*)

(*) If you cant find vbc.exe on your box you need to install .Net Framework, you dont need the complete SDK, that is optional.

.. and you will have a new fnord.exe and compiled your own windows commandline executable.

ergo: also on Windows you dont need a GUI to create applications.