Turck MMCache is a PHP Accelerator & Encoder. It increases performance of PHP scripts by caching them in compiled state, so that the overhead of compiling is almost completely eliminated. Also it uses some optimizations for speed up of scripts execution.
EzBasic - A C++ based library, that can be used to make programs using functions as in VB. The library has 25 classes ranging from GUI, Threads, String, Active-X etc.
PLT Spy is a Python to Scheme translator.