> As this package is GPL, have you considered using QT as 
the 
> GUI toolkit? Then you could have one source tree that can 
> be compiled on Windows, Linux and MacOS?
Well, QT was non free on Windows platforms, if I remember? 
And I also did not want to rewrite from scratch another 
interface ; the web GUI was much simpler to develop than 
the windows one ; and I suspect that the QT interface would 
have been a bit complex to implement, to :)