Advanced Module Manager is an extension that changes the way your Module manager works. It adds a multitude of functions, like: See what modules are active for the menu item you are editing Edit modules in modal popup windows Option to not show modules that have no output (handy for things like dynamic menus) Option to show modules on all pages, except the selected menu items (reverse ...
Add to Menu is an Administrator module. You will get an extra link in the top right of your Administrator to quickly add a menu item link of the page you are viewing. Add to menu natively supports FLEXIcontent's menu items creation.