yWorks has announced the availability of yGuard 2.0. They write in: "yGuard is our free bytecode obfuscator that integrates perfectly with the Ant build tool. It can be used to obfuscate jar files and text-resource files accordingly in order to both make decompilation a lot more difficult and decrease download file sizes of your applications. Version 2.0 makes configuring the obfuscation process easier and uses sophisticated bytecode analysis that allows it to remove unneeded fields, methods, and classes."