Learn more about how Mambo is licensed and how this affects you.
Mambo is released under the GNU General Public license (GNU GPL).The
GNU GPL provides for a person or persons to distribute Mambo for a fee,
but not actually charging for the software itself, because Mambo is
free. Mambo is free to share and change, but if you do change it in
anyway, can you also change the license and make it commercial? No! The
whole GPL is devoted to ensuring this does not happen. Copyright, a
much more refined and stringent law will ...