Superuser Must have in order to allow root only programs the root access to operate.
ROM Toolbox Lite Allows you to download and install ROM's, Back up ROM's, Manage backups, Wipe data, Wipe cache, Wipe dalvik-cache, and Wipe battery stats, plus much, much more!
BusyBox Installer Most of your ROOT apps will require this in order to install/operate correctly.
Titanium Backup ★ root Must have! It allows you to back up your apps, so when you flash to a new ROM, you can quickly restore your apps without having to remember what you had, then download them all over again, it evens backs up your app data, so you want have to re-configure anything!