Handy tricks to get rid of those pesty bugs.

The Alternative PHP Cache (APC) is a free and open opcode cache for PHP. Its goal is to provide a free, open and robust framework for caching and optimizing PHP intermediate code.

An easily installed PHP Zend engine extension that provides a PHP cache, and is capable of delivering a substantial acceleration of PHP scripts without requiring any script changes, loss of dynamic content, or other application compromises.

Open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.