Licencja publiczna GNU

Licencja, na której udostępnianey jest WordPress, to GPLv2 (lub nowsza) z Free Software Foundation. Kopia licencji jest dołączona do każdej kopii WordPressa, ale możesz także przeczytać tekst licencji tutaj.

Part of this license outlines requirements for derivative works, such as plugins or themes. Derivatives of WordPress code inherit the GPL license. Drupal, which has the same GPL license as WordPress, has an excellent page on licensing as it applies to themes and modules (their word for plugins).

There is some legal grey area regarding what is considered a derivative work, but we feel strongly that plugins and themes are derivative work and thus inherit the GPL license. If you disagree, you might want to consider a non-GPL platform such as Serendipity (BSD license) instead.