Portions of this code are copyrighted 4ms Company, 2024. This includes all the files in include/metamodule and some other files. These portions of code are free software and can be redistributed and/or modified under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version. In addition, you are granted the "MetaModule Plugin License Exception", allowed under section 7 of GPLv3.
The remaining code, except that which is listed in LICENSE-dist.md, is from the VCV Rack SDK v2.4.1, and is copyrighted by VCV. Some of the VCV Rack SDK 2.4.1 code has been modified by 4ms Company.
Licenses of third-party libraries are listed in LICENSE-dist (HTML).
A Plugin is defined as a software library intended to be linked and executed by this software.
You are granted the permission to use this software's Application Programming Interface (API) in your Plugin in source and binary forms, as well as link to this software with the Plugin, regardless of the Plugin's license terms even if it would otherwise violate the terms of this software's GPLv3.
Derived works of this software may keep or omit this Exception.
This means that plugins do not need to be licensed under the GPLv3 and can be released under any license of your choice (e.g. proprietary, open-source, freeware, etc.). However, plugins that copy a significant portion of non-API source code from MetaModule must be licensed under GPLv3.