MIDletPascal is specifically suited for development of J2ME midlets. It's compiler translates Pascal source code directly into Java microedition bytecode.
Proteus Cross Compiler system allows the generation and compilation of Java Code from llvm-gcc compatible languages (C/C++/fortran). The generated code will execute at up to 50% of native code.
A sub-C cross compiler for EduMIPS64 simulator. EduXcomp is a java project built using the antlr tool, and a grammar written by Monty Zukowski hardly modified by Elena Carobene, Massimo Trubia, and Alessio Tognazzolo.
Ruby On Flash is a compiler written in Java that compiles Ruby source code directly into Flash applications(.swf files), and aims to provide a programmer-friendly approach to casual Flash game development.
Javum, the Java Virtual Unix Machine, is an ambitious project which aims to provide a full virtualized Unix environment including C compiler (GCC), Unix-like API, shell, and command line tools, inside of a JVM. Details @ http://javum.wiki.sourceforge.net
A Windows native distribution of Bigloo, a Scheme system that includes an optimizing compiler generating C code, Java classes and .NET CIL files as well as an interpreter.
M+ Compiler/Interpreter is a interpreter library written in Java that delivers the possibility to extend any Java application with simple scripts. Besides the usage of native datatypes and operations you can instantiate and call native Java objects.
This project aims to provide a Java-Bytecode compiler for the fairly new programming language WRL and others like PHP4 and Postfix, based on the research on the SableCC parser generator and common W3C.ORG standards.
jRate is a real-time Java compiler and runtime system (based on GNU GCJ) with support for much of the Real-Time Specification for Java (RTSJ), including threading constructs with real-time constraints, asynchronous event handling, and memory regions.
zCOBOL portable mainframe COBOL compiler, part of the z390 project
The zCOBOL portable mainframe COBOL compiler with support for compiling multiple dialects of COBOL into any one of several target language executable programs including HLASM compatible mainframe assembler, Java, C++, or Intel assembler. All downloads and other information are kept at the z390 project site; see the home page link for more information.