Debug
This components provides a set of classes that help you to debug an application. It provides timers and report generators for different formats
that give a summary of warnings and errors that occurred within your application.

EventLog
Allows you to log events into files or other storage spaces in different formats.

Execution
Provides functionality to give feedback to your application's users when a fatal error happened or an uncaught exception was thrown.

File
Provides support for file operations which are not covered by PHP or are just missing. (Future version)

ImageAnalysis
This class allows you to analyse image files in different ways. At least the MIME type of the file is returned. In some cases (JPEG, TIFF and GIF) additional information is gathered as well.

ImageConversion
A set of classes to apply different filters on images, such as colour changes, resizing and special effects.

Mail
The components allows you construct Mail messages conforming to the RFCs. It has support for attachments, multipart messages and HTML mail. It also interfaces with SMTP to send the e-mail.

PersistentObject
This component allows you to store an arbitrary data structures to a fixed database table. The component provides all the functionality needed to fetch, list, delete etc these datastructures.

PhpGenerator
Provides a simple interface for creating PHP files and executing PHP code.

SystemInformation
Provides access to common system variables, such as CPU type and speed, and the available amount of memory. (Future version)

Template
A fully functional Templating system, supporting template compilation in different levels, user defined functions and operators, an optimizer, output escaping for different output handlers to prevent XSS and other security problems and a plug in system for extra functionality (such as a Translation system). (Future version)

Translation
A component that reads XML translation definitions (the Qt Linguist format), supports caching of translation contexts and presents you with a class to apply translations to strings. A filter system allows you to transform translation definitions for special use.

UserInput
A component that assists you to safely user input variables coming into your application. It builds on top of PHP's filter extension and extends it by providing a more inituitive API.

For more information : http://ez.no/products/ez_components