JProofLite
An on-line Java Obfuscator. Obfuscates one class file at a time, to prevent reverse engineering. [Freeware]
url:www.jproof.com/services/JProofLite.html
JReveal.Org
Online Java decompiler and obfuscator. Also has a resource directory. [Freeware]
url:www.jreveal.org/