| Agent | Abstract class for the implementation af an Agent. |
| Api | Abstract class to implement an API. |
| Autoloader | Autoloader. |
| ClassLoader | Class for safely loading classes. |
| Component | Abstract class to implement a (Controller) Component. |
| Config | Configuration. |
| Controller | Abstract class for implementing a Controller. |
| Driver | Abstract class for implementing a Driver. |
| Exception | Exception class. |
| Linker | Class to create web links based on the current request. |
| Logger | Class to log messages to different targets. |
| Model | Abstract class for implementing a Model. |
| Request | Base class to represent a request. |
| Response | Base class to represent a response. |
| View | View. |
| WebUtils | Class that holds several web-specific methods and properties. |