[wp-hackers] Alternative Licences for WP Plugins?

[Scott Merrill]

Theodor Ramisch wrote:
> Hi,
> 
> I want to write a WordPress plugin. The codex means
> that I have to release it under GPL or a GPL
> compatible license. Why?

Because the GPL is intended to preserve freedom.  Efforts to restrict 
freedoms work against the purpose of the GPL.

> The problem is that I don't want that anybody copies my plugin, adds 
> some lines and sells it.
> As far as I understood, the GPL allows this.
> 
> Is that true? If not, is there a human-readable
> description of the GPL and its derivatives?

http://www.gnu.org/licenses/gpl.html

The GPL FAQ might help, too:
http://www.gnu.org/licenses/gpl-faq.html

> Or may I release my plugin under creative
> commons licence?

Any GPL-compatible license will satisfy the GPL:
http://www.fsf.org/licensing/licenses/index_html#GPLCompatibleLicenses

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