PEAR
PEAR is a framework and distribution system for reusable PHP components. I help maintain PHP_Compat, HTML_AJAX and Validate_UK, and often contribute elsewhere.
PEAR news:
PHP
PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. In the past I have helped out with bug reports and fixes, I am currently working (slowly) on native object oriented session handling and memoization.
PHP news:
Varnisher
Varnisher is an administration and backend server integration system for Varnish, a state-of-the-art, high-performance HTTP accelerator. This project has just kicked off but has several keen developers, I hope to announce the first development release and website here shortly.