Aaron D. Campbell

WordPress 3.3 introduced new flyout admin menus. If you prefer to be able to 
choose to have some menu items expanded this plugin will let you. Closed menu 
items still flyout. Open items are saved in a cookie, so while they persist, 
they don’t persist from browser to browser. JavaScript is required.

Expanded Admin Menus

Allows you to expand admin menus similar to WordPress 3.2

Laurence Tuck

Tired of searching for an admin menu manager? This plugin will display a list of ALL active menus per site and allow Network Admin to select which menu options should show depending on user capability.

Manage Admin Menus

Manage admin menus in the wordpress backend.

Expanded Admin Menus vs Manage Admin Menus