This is FuBar_BagFu, rewritten using Ace3 and LibDataBroker. It will simply show your bag usage on your LDB display of choice. There are a few shortcuts to various bags by clicking the icon and the tooltip can be used to give more detailed bag information.
Broker RestFu is a continuation of FuBar_RestFu using LDB (Data Broker). It will present you with a tooltip listing the rested XP state of your characters, so you can quickly tell who you might want to level next.