GPL 2.0 with ProGuard exception

License

ProGuard is free. You can use it freely for processing your applications, 
commercial or not. Your code obviously remains yours after having been processed,
and its license can remain the same.
The ProGuard code itself is copyrighted, but its distribution license provides
you with some rights for modifying and redistributing its code and its
documentation. More specifically, ProGuard is distributed under the terms of the
GNU General Public License (GPL), version 2, as published by the Free Software
Foundation (FSF). In short, this means that you may freely redistribute the
program, modified or as is, on the condition that you make the complete source
code available as well. If you develop a program that is linked with ProGuard,
the program as a whole has to be distributed at no charge under the GPL. I am
granting a special exception to the latter clause (in wording suggested by the
FSF), for combinations with the following stand-alone applications: Apache Ant,
Apache Maven, the Google Android SDK, the Eclipse ProGuardDT GUI, the EclipseME
JME IDE, the Oracle NetBeans Java IDE, the Oracle JME Wireless Toolkit, the
Intel TXE SDK, the Simple Build Tool for Scala, the NeoMAD Tools by Neomades,
the Javaground Tools, and the Sanaware Tools.


The ProGuard user documentation is copyrighted as well. It may only be
redistributed without changes, along with the unmodified version of the code.