At its July 14th meeting, the Plone Foundation board of directors adopted a new Plone theme licensing policy. The key points of the policy are:
- Themes that import from GPL-licensed code must be GPL.
- Themes that do not import from GPL-licensed code may be distributed under other licenses. We encourage the use of GPL or Creative Commons licenses.
- Any Plone theme may be listed in the products section of Plone.org. Plone theme packages that are uploaded to Plone.org for distribution must be licensed under the GPL, Creative Commons, or similar open-source licenses.
While long-time Plone contributors might note that this policy is not substantially different from the general Plone add-on products licensing policy, Diazo theming technology makes it far easier to create themes that don't derive from GPL-licensed code and thus the board felt that it was worthwhile to address themes specifically.