WowAce

Auto roll greed, need, pass or manually roll on items.

tekProber

Simplifies GDKP bidding processes

Utility library with shared functions and data for various addons by NeoTron.

GetInLine

Nvp

Broker plugin to display player orientation

Death reports

Creates simple table controls for tabular text data.

Standalone of FuXPFu - Now sticks to anything!

FuBar_ShardCountFu

Mutt (Macro Update Target Tool) provides slash-commands that can patch the predefined targets in your macros.

Square Minimap and more

For Developers (of Addons which uses LibWho-2.0): show queues and queries in realtime

Scans your Equipment for cumulative item bonuses and sums them up.

BankAccountant

Gathers statistics on certain chance-on-use spells, also known as procs.

StarVisuals displays various data visualizations

This will keep track of how much you have paid per item in your inventory. Only one of (Auctionator, Auctioneer, AuctionLite,...

Volume control panel.