Nonfree

Near-synonyms: closed-source, proprietary

Furthermore, if software released under the GNU General Public Licence (GPL) were combined with proprietary (nonfree) code, the resultant combination had to be released under the GPL.

However, if you have developed an application that requires MySQL for its functionality and you want to sell your software with MySQL under a nonfree license, you must purchase a commercial license from MySQL AB.

The following licenses do not qualify as free software licenses as defined by the FSF. A nonfree license is automatically incompatible with the GNU GPL.