| Name | Description | Type | Package | Framework |
| JsonpRequest | A JSONP request that is waiting for a response. | Class | com.google.gwt.jsonp.client | Google WebToolkit (GWT) |
| JsonpRequestBuilder | Class to send cross domain requests to an http server. | Class | com.google.gwt.jsonp.client | Google WebToolkit (GWT) |
| TimeoutException | Exception sent when a JSONP calls expires the timeout. | Class | com.google.gwt.jsonp.client | Google WebToolkit (GWT) |