This is my improved version of Advanced Bags because it seems the original is discontinued (at least for now).

If your computer suddenly turns into a giant lizard and eats you, or anything else that isen't supposed to happen, happens. I take no responsibility ;)

This is the original description by SunBlaze: Advanced Bags is a UI Addon to help players manage all their items. It can replace Blizzard's bag system and can also work along side it. It provides a very easy to use UI to configure and manage how your items are sorted. Although it does organize and sort your items, Advanced Bags does not actually manipulate your item's location in your bags.