| Command |
| CommandLoader |
| DependencyInjection |
| Descriptor |
| Event |
| EventListener |
| Exception |
| Formatter |
| Helper |
| Input |
| Logger |
| Output |
| Question |
| Style |
| Tester |
| Tests |
| Application | An Application is the container for a collection of commands. |
| ConsoleEvents | Contains all events dispatched by an Application. |
| Terminal |