Programming languages for the Java Virtual Machine JVM and Javascript

xtc is a macro system for C and the corresponding, extensible compiler, which is called xtc for eXTensible C. The parser generator and implementations are all in Java.

Cibyl is a programming environment and binary translator that allows compiled C programs to execute on J2ME-capable phones. Cibyl uses GCC to compile the C programs to MIPS binaries, and these are then recompiled into Java bytecode. Cibyl programs are regular compiled Java programs.

Jatha macros are Java programs that write Java programs. Jatha is a preprocessor that runs arbitrary java code in order to generate the source code that the compiler sees. This one is different from the other Jatha listed here.