Frameworks
- Nette Framework - Quick 'n' Comfortable Web Development in PHP
http://www.nette.org - PEAR :: The PHP Extension and Application Repository
http://pear.php.net/
a framework and distribution system for reusable PHP components - PECL :: The PHP Extension Community Library
http://pecl.php.net/
a repository for PHP Extensions, providing a directory of all known extensions and hosting facilities for downloading and development of PHP extensions. - Smarty : Template Engine
http://www.smarty.net/
Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. This implies that PHP code is application logic, and is separated from the presentation.