Mixin is a trait/mixin and bytecode weaving framework for Java
Java class file shrinker, optimizer, obfuscator, and preverifier
toolchain for obfuscated compilation
LLVM Obfuscator
Android virtual machine and deobfuscator
WTF Obfuscator is a new obfuscator for your .NET applications
Scramble files to enhance security
A maven plugin for obfuscating java code via ProGuard
Java obfuscation framework.
Cryptkeeper Secuirty tool