# License most of Furnace is under the GNU General Public License (GPL) version 2 or later. the ASIO SDK is distributed under the GNU General Public License (GPL) version 3, as lermitted by Steinberg's dual licensing model. **enabling ASIO support at build time will result in a GPLv3-licensed binary**. certain components, such as emulation cores, libraries and tools, are under various licenses, which can be found in their respective source files/trees.