| Name | Description | Type | Package | Framework |
| PlaceHistoryHandler | Monitors PlaceChangeEvents and History events and keep them in sync. | Class | com.google.gwt.place.shared | Google WebToolkit (GWT) |
| PlaceHistoryHandler .DefaultHistorian | Default implementation of PlaceHistoryHandler. | Class | com.google.gwt.place.shared.PlaceHistoryHandler | Google WebToolkit (GWT) |
| PlaceHistoryHandler .Historian | Optional delegate in charge of History related events. | Interface | com.google.gwt.place.shared.PlaceHistoryHandler | Google WebToolkit (GWT) |