The MenuTree block, developed by Jusuff, can make multi level menus within your Zikula website. By means of templates, plugins and stylesheets one can create horizontal and vertical menus in a wide variety of layouts. A number of predefined menus are ready made for MenuTree. Making and using a nice (graphic) multi-level menu is a piece of cake
Extmenu is a block that is available in the Core for making single level menus in your Zikula site. Also for the Extmenu block a large number of ready made menu designs is made available.