has clause is compatible license of has website homepage GNU GPL Compatible License Type GNU GPL v3 GNU GPL v2 Artistic License Artistic License 2.0 https://opensource.org/licenses/Artistic-2.0 Allyson Lister The Artistic License v 2.0 is a free software license by the definition of the GNU Project and compatible with the GPL thanks to the relicensing option in section 4(c)(ii) (as compared with the Artistic License 1.0). http://www.gnu.org/licenses/license-list.html, accessed 12 June 2013. Free Distribution with notices