WowAce

Show coordinates on minimap

Displays a variety of useful stats for tanking

Display an arrow that points to a raid/party member anchored to raid frames

Bidder for DKP points. Usable as standalone bidder, or with DKP - Manager to manage points.

Mark My Words

Cartographer_nnTrainers

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

Shows a nice Soulstone Monitor.

Creates virtual cyphered chat channels over guild addon communication channel.

Lightweight time/date display with optional hourly chime.

Timerbar embeddable library

Cryolysis

Leveling guides for trade skill professions.

Adds Outfitter set filters to AdiBags.

Quixote

Shows where the equipment of inspected users or yourself is from.

Provides extended aura status settings.

Dailies Quest Tracker

Shows your standings with the factions.

Adds on-screen buttons for the farming tools and seeds.