BackPress
http://backpress.org/

BackPress is a PHP library of core functionality for web applications. It grew out of the immensely popular WordPress project, and is also the core of the bbPress and GlotPress sister-projects.

http://backpress.org/

BackPress is a PHP library of core functionality for web applications. It grew out of the immensely popular WordPress project, abd it includes a variety of the foundations you need to build robust, scalable web applications. It’s all licensed under a generous GPL2 license, so you can use it in your own free or commercial projects.

BackPress is a PHP library of core functionality for web applications. It grew out of the immensely popular WordPress project, and is also the core of the bbPress and GlotPress sister-projects. It includes a variety of the foundations you need to build robust, scalable web applications including (amongst other things): * Logging, * User Roles and Capabilities (Permission systems), * Database connections (across multiple servers and multiple datacenters), * HTTP Transactions, * XML-RPC Server and Client, * Object caching, * Formatting, * XSS and SQL injection protection, including a variety of powerful escaping functions, * Taxonomies and * Options management