WowAce

Shows missing buffs and handles welfare and deluxe buffs as one (motw/gotw, blessings, etc.). This lets you see when you nee...

Sets you to DND when you fight a boss, and some other crap.

Browse your guild members crafts anywhere, anytime.

Keeps track of people who have recently sent you messages.

A total number of quests Data Broker plugin.

Adds the "pixel perfect" font "Silkscreen" to LibSharedMedia

Adds achievement reminders to BigWigs

Provides the the health and target of by an unit targeted mob (meant to be used for tanks).

Action button layout and configuration

Makes the Blizzard options frame movable and resizable

oUF_HolySmurf

Automatically converts a party to a raid when you attempt to zone into a raid zone without a raid.

Hitman

Checklist and notes addon.

trade history log, recent trade list by [email protected]

This addon helps with daily quests.

A Library for hooking tooltips.

A 'channeling spell'-tracking addon for Affliction Warlocks. Drain Soul, Drain Life/Harvest Life and Malefic Grasp.

Improvements to the standard Blizzard Eclipse bar for balance druids. Use /ebp for the config screen.

Raid Warning filering module for TweakHub.