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cc-licenses - Re: [cc-licenses] cc-by-sa and gpl

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Subject: Development of Creative Commons licenses

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  • From: "Andres Guadamuz" <a.guadamuz AT>
  • To: <adam AT>, "'Discussion on the Creative Commons license drafts'" <cc-licenses AT>
  • Subject: Re: [cc-licenses] cc-by-sa and gpl
  • Date: Mon, 2 Jul 2007 16:43:21 +0100

Dear Adam,

As far as I know, there is an official list of compatible licences, which is
empty at the moment. See:

In my very personal opinion, GPL v2 is similar enough to BY-SA to fulfil the
requirement of "similarity" described in the licence. However, GPL v3 is
entirely different, and IMO it's not similar enough.

Best Regards,


Andres Guadamuz
AHRC Research Centre for Studies in
Intellectual Property and Technology Law
Old College, South Bridge
Edinburgh EH8 9YL

Tel: 44 (0)131 6509699
Fax: 44 (0)131 6506317
a.guadamuz AT

IP/IT/Medical Law LLM by Distance Learning

-----Original Message-----
From: cc-licenses-bounces AT
[mailto:cc-licenses-bounces AT] On Behalf Of adam hyde
Sent: 02 July 2007 15:38
To: cc-licenses AT
Subject: [cc-licenses] cc-by-sa and gpl


I was wondering...Can material that is licensed under the CC-BY-SA (3.0)
license be re-issued under the GPL.

I know the two licenses are not compatible. However the clause states:
"you may distribute the resulting work only under the same, similar or a
compatible license."

What exactly does 'similar' mean? Is the GPL sufficently 'similar' to the


adam hyde
'free as in media'


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