Sometimes you just want to talk straight about all the nitty-gritty details. Here's a list of features which might help you getting a better picture if you're already in the topic.

• Object Lifecycle Management: The framework takes care of instantiation, configuration and disposal of objects.
• Loose coupling and support for framework agnostic programming. Avoids dependency on the framework
• Support configuration and replacement of components
• Components are pure PHP objects, no need to extend base classes
• Lightweight Inverse-of-Control Container with Dependency Injection support
• Context support (Production, Development, Testing and User-Defined contexts)
• Eases testing by providing mock environments and object configuration

• The most complete AOP Framework for PHP
• Weaves in advices on the fly - no compile step required
• Works with plain PHP objects - no base class needs to be extended
• It's fast!

• Flexible and mature MVC Framework
• Favors conventions but allows configuration
• Flexible Front Controller
• Cascadeable Action Controllers
• Flexible forwarding and error handling
• Extensible Request / Response mechanism with built-in support for web and command line
• Smart URLs and routing with API for extensions
• AJAX support
• Built-in security for user input

• Generic Validation Framework for all kinds of objects
• Cascadeable validation chains
• Built-in filters and validation rules
• Custom validator support
• Automatic validator resolution for domain models
• Meaningful exception and validation error handling

• Easy copying and mapping of properties between objects
• Transformation of property formats (eg. DateTime object to timestamp string) through property editors
• Validation support during the mapping process
• Easy solution for Data Binding (eg. between Domain Model and a Form Model)

• Clear separation of features and namespaces
• Easy exchange of packages through TYPO3's package repository (T3PR)
• Automatic registration of classes (components) and resources
• Command line access for effective management of package installation and upgrade
• Built-in monitoring of security alerts for installed packages
• Compressed FLOW3 packages are just plain .ZIP files

• Manages all assets and other package resource files
• Allows storage of web resources outside the public web directory
• Different backends for resource storage: File system, Database, Content Repository, ...
• Automatic separation of public and restricted media (documents, pictures, sound files ...)
• Lightweight, token-based secure download support
• Automatic caching and management of resources
• Hook-ins for indexers and other custom extensions

• Consistent exception hierarchy
• Verbose exception handler with clearly arranged background information and backtraces (including source code snippets)
• Unique error and exception codes with explanation and user comments in our wiki

• Advanced support for annotations
• Read support for protected properties

• Clear separation of security concerns trough Aspect-Oriented Programming
• Default security by convention (eg. naming of methods)
• User, group and role support
• Extensive monitoring support
• Of course configurable