[wp-hackers] Plugin License Excluding Spam

Otto otto at ottodestruct.com
Fri Oct 23 15:47:07 UTC 2009

Ahh, true that. Fair enough, I was looking for the "or any later
version" boilerplate in the readme and didn't find it, so I assumed
that the license.txt was the only allowable version.

Nevertheless, I would avoid using GPLv3, because it *is* incompatible
with GPLv2 software, and many people will not use it because of the
excessive restrictions it imposes on usage (not just distribution,
like the GPLv2).


On Fri, Oct 23, 2009 at 10:36 AM, Jennifer Hodgdon
<yahgrp at poplarware.com> wrote:
> Otto wrote:
>> - WordPress is licensed under the GPLv2. The GPLv3 is not compatible,
>> because of the additional restrictions it imposes. There's no code or
>> documentation I'm aware of that allows you to up-version with
>> WordPress and the license, so AFAICT, the GPLv3 is not an acceptable
>> license for WordPress plugins and/or themes.
> I think you are wrong there. The readme.html file in the WordPress distro
> says:
> "WordPress is released under the GPL (see license.txt)."
> license.txt says:
> "If the Program does not specify a version number of this License, you may
> choose any version ever published by the Free Software Foundation."
> WordPress does not specify a version number (except I do see a GPL v2
> reference in xmlrpc.php, and there are specific licenses on some individual
> 3rd-party files that are included in WordPress), as far as I can see.
> So you may choose any version of the GPL, by my reading. I'm not an
> attorney...
>  --Jennifer
> --
> Jennifer Hodgdon * Poplar ProductivityWare
> www.poplarware.com
> Drupal, WordPress, and custom Web programming
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