[cad-linux] Re: CADCAM: TomCad/Grpahite One/GPL: I'm confused
- From: Guy Edwards <guy_j_edwards@xxxxxxxxxx>
- To: cad-linux@xxxxxxxxxxxxx
- Date: 03 Jun 2003 20:54:05 +0100
On Tue, 2003-06-03 at 16:40, Thomas Schmidt wrote:
> With a new release, a licence can change. For the software I use, I have =
> licences. This even includes a Qt licence.
As the author and copyright holder of your own software you can do pretty
much whatever. This includes releasing under different licenses
simultaneously (it's in the GPL documentation). From what I understand, a
good example of this is The MySQL people who do a GPL and a commercial
license depending on what people want e.g. if a company wants to use the
code to develop their own product and not be affected by the GPL they can
buy a commercial license from MySQL AB and not have to release their
resulting source code.
You could, for instance, write a GPL program and then turn it completely
closed source with the next release, but everyone who downloaded the
previous version you released under the GPL could keep going on to
develop their own GPL versions based on your old code which you
supplied under the old and still valid license for that release.
Guy
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