What open source licensing options does Oracle offer for its MySQL software?
Oracle makes its MySQL database server and MySQL Client Libraries available under the GPL for use with other GPL-licensed software and FOSS applications licensed under GPL-compatible FOSS licenses. In addition, for open source projects and developers creating and distributing open source software under certain FOSS licenses other than the GPL, Oracle makes its GPL-licensed MySQL Client Libraries available under a FOSS Exception that allows distribution of the FOSS application with the MySQL Client Libraries without causing the entire derivative work to be subject to the GPL.