An API and a graphical tool for inspection (viewing, searching and comparing) and manipulation (modification, obfuscation, refactoring of methods, fields, attributes and code) of classfiles for the Java platform.
Stand-alone JAVA Email obfuscation tool for HTML pages. This tool can be used to process single pages, or whole webpage bundles, to protect email addresses occuring in them from spam bots and other harvesters, by hiding them using various methods.
Yet another Java obfuscation tool. This one has a bit of a different twist, in that it can obfuscate native methods by generating a .h file which #defines the original method names to the obfuscated ones. Built with Apache BCEL.