Avendi Media

Menu Tamer adds collapse/expand links to nav menu items in the WordPress admin interface. If you have a large navigation menu, managing it can become a frustrating task due to the sheer size it takes up. Menu Tamer lets you collapse any branch of a nav menu to get it out of the way.
Menu Tamer has been tested in the latest versions of Chrome, Safari, and Firefox, as well as Internet Explorer 7, 8, and 9 (understandably, it is much slower in IE, but it works).

Menu Tamer

Adds collapse/expand links to menu items to de-clutter the nav menu interface

Aaron D. Campbell

This is now in WordPress core as of 4.4. Adds an archive checkbox to the nav menu meta box for Custom Post Types that support archives.

Custom Post Type Archives in Nav Menus

This is now in WordPress core as of 4.4. Adds an archive checkbox to the nav menu meta box for Custom Post Types that support archives

Menu Tamer vs Custom Post Type Archives in Nav Menus