Some of the modules and themes listed here are for older versions of Fork CMS.
More recent themes and modules can be found on github in the Friends of Fork CMS organisation
Menus are organised using categories. You can create your own menus that link to existing pages. When adding a menu, you can set the recursion level. When adding a menu, you can set a custom class name (for adding extra CSS style). When adding a menu, you can set a custom description (becomes the anchor title). Multilingual support (other languages can have other menu entries).