WowAce

Spell overlay customization and spell state HUD.

Restores channels and channel-window associations after disconnects remove them.

Shows a window displaying any raid member below 10,000 health during the Chimaeron encounter.

Checklist and notes addon.

Adds a confirmation dialog when crafting Bind-On-Pickup trade skill items

BagPress

Shows optimal target to use various area healing spells

Adds unreal tournament style sounds to PvP encounters.

FuBar_OmenFu

Uses guild notes to add alts' main names to chat windows and other places

Saves who searches in a favorites list.

Centralised management hub for small tweak, interface and utility addons.

Automatically invites player from templates.

Replacement for WoW's flash/fade functions.

Enhances the StackSplitFrame with numbered Buttons, a '1-Click Mode' and a 'Auto Split Mode'.

Displays a grid of guild ranks versus permissions.

Open those clams (and other containers)

LDB display addon with one Blockoblock per plugin.

Target assistance by automatic rewriting of macros

TrickOrTreat