| Bell | The bell commands |
| Button | The button widget |
| Canvas | The canvas widget |
| Checkbutton | The checkbutton widget |
| Clipboard | The clipboard commands |
| Dialog | The dialog commands |
| Encoding | The encoding commands |
| Entry | The entry widget |
| Fileevent | |
| Focus | The focus commands |
| Font | The font commands |
| Frame | The frame widget |
| Grab | The grab commands |
| Grid | The grid commands |
| Image | The image commands |
| Imagebitmap | The imagebitmap commands |
| Imagephoto | The imagephoto commands |
| Label | The label widget |
| Listbox | The listbox widget |
| Menu | The menu widget |
| Menubutton | The menubutton widget |
| Message | The message widget |
| Option | The option commands |
| Optionmenu | The optionmenu commands |
| Pack | The pack commands |
| Palette | The palette commands |
| Pixmap | The pixmap commands |
| Place | The place commands |
| Radiobutton | The radiobutton widget |
| Scale | The scale widget |
| Scrollbar | The scrollbar widget |
| Selection | The selection commands |
| Support | |
| Text | The text widget |
| Textvariable | |
| Timer | |
| Tk | |
| Tkthread | Helper functions for using LablTk with threads. |
| Tkvars | The tkvars commands |
| Tkwait | The tkwait commands |
| Toplevel | The toplevel widget |
| Widget | |
| Winfo | The winfo commands |
| Wm | The wm commands |