- AtkGObjectAccessible — This object class is derived from AtkObject and can be used as a basis implementing accessible objects.
- AtkHyperlink — An ATK object which encapsulates a link or set of links in a hypertext document.
- AtkNoOpObject — An AtkObject which purports to implement all ATK interfaces.
- AtkPlug — Toplevel for embedding into other processes
- AtkSocket — Container for AtkPlug objects from other processes
