WowAce

Gives equipped and overall iLvl to indicate the quality of a character's gear.

FuBar_PTReagentFu

Track any items you want in a tooltip

Open those clams (and other containers)

Adds usable and equipable filters to Baggins

Lists Pots and Herbs you got on all chars and allows you to specify color coding

Spawns toasts for looted items, money, and currencies.

Inventory and bank organizer.

A tool to appraise, estimate, or judge your equipment against the equipment of others.

Automatically sells low quality gray items and selected white items to the vendor.

Saves contents of your guild bank and sends/receives updates over the addon channel

A menu with useful searches for Inventorian

ItemSync the happy item gatherer and toolkit.

ClosetGnome_Mount

Reforges stuff

A plugin for OneBag to make your keyring the same texture as OneBag/Bank.

Adds item values to chat messages.

Sanity2

Allow rule based automatic rolling on loot.

Monitor the remaining duration on your Mysterious Eggs and other perishable items.