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Date: Wed, 06 Oct 2004 15:02:55 -0400
From: Hyman Rosen <hyrosen@mail.com>
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Subject: Re: Gnat Pro and the GPL
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Date: 2004-10-06T15:02:55-04:00
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Marius Amado Alves wrote:
> So at last we know the difference between open source and free software: 
> Open source software can be dual licensed, and free software cannot! Ah, 
> the beauty of simple things :-)

All software can be licensed in any way that its copyright holders choose.
Free software implies a certain set of restrictions upon the licensees if
they choose to redistribute. Open source implies a wider and more variable
set. The FSF is philosophically opposed to licenses which are not free
software, and thus will not dual-license under any such. Others may choose
otherwise. It is all perfectly simple, except to those people who wish that
certain owners would choose different licenses than the ones they actually
use.