CodeKeeper - free WordPress <code> block plugin
CodeKeeper is a free WordPress plugin that retains the formatting of your <code> blocks and prevents the editor adding unnecessary line breaks or paragraphs.
TACS - free PHP template and caching script
TACS - Templating and Caching System is a free and lightweight PHP script. It is simple to use and offers easy file includes, variables, code output caching, HTML compression and more. The script is only 10kb in size, works with PHP4 or PHP5, and is easy to incorporate in to any PHP website.
TACS is free to download, use, modify, and distribute.