| Name | Description | Type | Package | Framework |
| JSONArray | Represents an array of JSONValue objects. | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |
| JSONBoolean | Represents a JSON boolean value. | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |
| JSONException | An exception that can be thrown when an interaction with a JSON dataSee Also:Serialized Form | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |
| JSONNull | Represents the JSON null value. | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |
| JSONNumber | Represents a JSON number. | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |
| JSONObject | Represents a JSON object. | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |
| JSONParser | Parses the string representation of a JSON object into a set of JSONValue-derived objects. | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |
| JSONString | Represents a JSON string. | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |
| JSONValue | The superclass of all JSON value types. | Class | com.google.gwt.json.client | Google WebToolkit (GWT) |