Sprocket is free software; you can redistribute it and/or modify it under the terms of either:

a) The GNU General Public License as published by the Free Software Foundation;
   either version 1 ( http://www.fsf.org/licensing/licenses/gpl.html )
   or (at your option) any later version, or

b) The "Artistic License": http://dev.perl.org/licenses/artistic.html