* Structured programming environment by using requests and actions
* Clean separation of code and output
* Support for multi-langual websites by using locales
* Templates for outputting HTML easily based on Smarty
* Automatic action dispatching using URL parameters
* Object oriented form construction and validation
* Object oriented handling of authentication
* Classes for creating XML/RPC clients and servers.
* Classes for creating syndicated XML feeds such as RSS and Atom feeds.
* Easy handling of files, directories and images. For images, there are some very straightforward functions that can create thumbnails and obtain specific information about these images.
* An object oriented interface for creating and sending email messages.
* Database abstraction layer supporting MySQL, PostgreSQL, SQLite and Oracle.
* Object oriented way of creating SQL statements.
* Logging infrastructure based on plain text or XML logfiles.
* A shopping cart infrastructure that makes it easy to create webshops.
* Different smaller modules that take care of string handling, debugging, configuration settings, timers.