FreeType (GNU GPLv2 or later option)
The FreeType font engine is dual-licensed. In addition to the FreeType License (FTL), you may use, copy, modify, and distribute FreeType under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
The complete text of version 2 of the GNU General Public License is provided in the topic GNU General Public License Version 2 in this appendix.
