OpenLaszlo is an open source platform for creating single-page applications that compile to Flash or HTML5 for web deployment. The project site is at http://openlaszlo.org.
Jikes RVM is a flexible infrastructure for virtual machine research
Jikes RVM (Research Virtual Machine) provides a flexible open testbed to prototype virtual machine technologies and experiment with a large variety of design alternatives. Jikes RVM runs on many platforms and advances the state-of-the-art of virtual machine technologies for dynamic compilation, adaptive optimization, garbage collection, thread scheduling, and synchronization. It is self-hosted, i.e. its Java code runs on itself without requiring a second virtual machine. Most other virtual machines for the Java platform are written in native code (typically C or C++). A Java implementation provides ease of portability and a seamless integration of virtual machine and application resources such as objects, threads, and operating-system interfaces.
A set of Eclipse plugins for the Scheme programming language. Features a powerful, fully extensible S-expression-based editor. Integrates seamlessly with any Scheme interpreter.
Gentee is a friendly full-scale and free programming language. It is easy-to-master and can be a reliable assistant in your everyday work. Software developers can easily use it in their applications.
Java-based BURG (code emitter generator), used by Adobe ASC 2.0 and Apache Falcon ActionScript compilers.
Refal.NET - Versatile, Compact yet Powfull Text Transformer and Compiler-Writing System. Based on Refal.NET Virtual Machine (+Refal.NET Compiler), this RAD-tool might be used for rapid prototyping, decreasing up to 10 times development efforts.
A small Java utility used with AspectJ which allows any checked exception to be re-thrown as an unchecked RuntimeException. This allows aspects to generically throw any checked exception without the compiler complaining. BCEL is used to accomplish this.