iPlug 2 is the continuation, please go and star/follow that ->
IPlug is a simple-to-use C++ framework for developing cross platform audio plugins and targeting multiple plugin APIs with the same code. Originally developed by Schwa/Cockos, IPlug has been enhanced by various contributors. IPlug depends on WDL, and that is why this project is called WDL-OL, although most of the differences from Cockos' WDL are to do with IPlug. This version of IPlug targets VST2, VST3, AudioUnit RTAS and AAX (Native) APIs. It can also produce standalone Windows/macOS audio/midi apps.
This version of WDL/IPlug shares the same license as the Cockos edition. Several of the added features are based on the work of other people. See individual source code files for any extra license information.
Cockos WDL Page: http://www.cockos.com/wdl
Discuss WDL on the WDL forum http://forum.cockos.com/forumdisplay.php?f=32
Cockos WDL License
Copyright (C) 2005 and later Cockos Incorporated
Portions copyright other contributors, see each source file for more information
This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
WDL includes the following 3rd party libraries (which are all similarly licensed):