| Subclasses from | Can be root | Allows #call: and #answer | Allows #addSubpane and #paneNamed: | Must register as children | Must redefine #renderContentOn: | Oriented to |
| WASmallfacesComposite | Yes | Yes | Yes | Yes | Yes | Applications, Examples, Suport #paneNamed:, #addSubpane: |
| SFComponent/SFObject | No | No | No | No | Yes | Very general widgets |
| SFCompositePane | No | No | Yes | No | No | Composite widgets, User widgets |
| SFLayoutPane | No | No | Yes | No | No | Composite widgets with layouted supanes |
| WASmallFacesRegistry | Yes | Yes | No | Yes | Yes | Register #children widgets with #register: and #unregister: |
| SFMorph | No | No | No | No | Yes | Widgets with basic visual setting |
| SFAbstractWidget | No | No | No | No | Yes | Widgets, State and Basic event support + SFMorph |
| SFLabelLayoutWidget | No | No | No | No | No | Widgets with layouted labels + SFAbstractWidget |
| SFAbstractText | No | No | No | No | Yes | Widgets which contain text + SFLayoutPane |
| SFCollectionView | No | No | No | No | Yes | Widgets which contain items + SFLayoutPane |
| WAAbstractExample | Yes | Yes | Yes | Yes | Yes | Examples |
