- GtkAdjustment — A GtkObject representing an adjustable bounded value
- GtkArrow
- GtkCalendar — Displays a calendar and allows the user to select a date
- GtkDrawingArea — A widget for custom user interface elements
- GtkEventBox — A widget used to catch events for widgets which do not have their own window
- GtkHandleBox — a widget for detachable window portions
- GtkIMContextSimple — An input method context supporting table-based input methods
- GtkIMMulticontext — An input method context supporting multiple, loadable input methods
- GtkSizeGroup — Grouping widgets so they request the same size
- GtkTooltip — Add tips to your widgets
- GtkViewport
- GtkAccessible