| PDO |
| AssetProvider | Indicates that a DataCollector provides some assets |
| DataCollectorInterface | DataCollector Interface |
| MessagesAggregateInterface | |
| Renderable | Indicates that a DataCollector is renderable using JavascriptRenderer |
| AggregatedCollector | Aggregates data from multiple collectors |
| ConfigCollector | Collects array data |
| DataCollector | Abstract class for data collectors |
| ExceptionsCollector | Collects info about exceptions |
| LocalizationCollector | Collects info about the current localization state |
| MemoryCollector | Collects info about memory usage |
| MessagesCollector | Provides a way to log messages |
| PhpInfoCollector | Collects info about PHP |
| RequestDataCollector | Collects info about the current request |
| TimeDataCollector | Collects info about the request duration as well as providing a way to log duration of any operations |