[kyllo]

Does that mean if there's an open source application you like, all you have to do to get it on your Surface is open the source code in the latest edition of Visual Studio, recompile it, transfer the files to your Surface, and you will be able to install and run it?

[jpatte]

Unfortunately no because chances are this open source code is using some parts of the Win32 API that are not supported by WinRT, so you would have to replace the invalid API calls by the new (probably asynchronous) ones... Maybe even completely rewrite the GUI if necessary.