JCPP is a complete, compliant, standalone, pure Java implementation of the C preprocessor. It is intended to be of use to people writing C-style compilers in Java using tools like sablecc, antlr, JLex, CUP, and so forth. It has been used to successfully preprocess much of the source code of the GNU C library.
SMC takes a state machine stored in an .sm file and generates the state pattern classes in fourteen programming languages. Its features include default transitions, transition arguments, transition guards, push/pop transitions, and Entry/Exit actions. It requires Java SE 1.6 or better.