This is one of the reasons I like to work with Tcl/Tk. Although I develop primarily on+for gnu/linux, tcl/tk is fully crossplatform, so, unless I call linux-specific system resources, my code can be run on mac/win/lin/bsd. Python/tkinter, which I also like, is the same, and/or perl/tk. I think Qt will do lin/mac/bsd easily enough, but, unless I'm mistaken, Qt on Win might be a bit of a P.I.T.A.
Re: Proposal submission
Although I develop primarily on+for gnu/linux, tcl/tk is fully crossplatform, so, unless I call linux-specific system resources, my code can be run on mac/win/lin/bsd.
Python/tkinter, which I also like, is the same, and/or perl/tk.
I think Qt will do lin/mac/bsd easily enough, but, unless I'm mistaken, Qt on Win might be a bit of a P.I.T.A.