Widget["FileDialog"] represents an Open or Save dialog.

Widget["FontChooser"] provides a panel for making a font selection based on a name, style, and size.

Widget["Frame"] represents a complete window.

Widget["Icon"] represents an icon.

Widget["ImageLabel"] represents an image label.

Widget["IndexedImagePanel"] represents an indexed image panel.

Widget["Label"] represents a textual label.

Widget["List"] represents a list.

Widget["MenuBar"] represents a menu bar.

Widget["MenuItem"] represents a menu item.