| Name | Description | Type | Package | Framework |
| JsArray | Wraps a native javascript array. | Class | com.sencha.gxt.legacy.client.core.js | GXT |
| JsObject | Wraps a native javascript object. | Class | com.sencha.gxt.legacy.client.core.js | GXT |
| JsUtil | JavaScript related methods. | Class | com.sencha.gxt.legacy.client.core.js | GXT |
| JsWrapper | Interface for objects that wrap a native javascript object. | Interface | com.sencha.gxt.legacy.client.core.js | GXT |
| LegacyParams | Aggregates both a list of values and a map of named values. | Class | com.sencha.gxt.legacy.client.core | GXT |
| Template | Represents an HTML fragment template. | Class | com.sencha.gxt.legacy.client.core | GXT |
| XTemplate | A template class that supports advanced functionality like: FormattingAutofilling arrays using templates and sub-templatesConditional processing with basic comparison operatorsBasic math function supportExecute arbitrary inline code with special built-in template variables | Class | com.sencha.gxt.legacy.client.core | GXT |