WowAce

Displays Pet Info for Hunters and Warlocks. Also keeps track of Stables and Pet and Demon skills.

Threat-2.0

Show what quests have changed

Load manager for AddOns

ItemPriceTooltip

HUD that you can tweak the way you want.

Automatically leaves the global channels when inside an instance/raid and restores them when exited.

Sorts the Wardrobe

Simple right click casting.

Add-on that allows you to setup and quickly switch between different profiles of your action bars

A FuBar plugin for Converge Guild Officers.

Tracks SendAddonMessage Spam

Adds a highlight border to items in your MogIt Wishlist, making them easier to see.

A library to help with localization of item types and subtypes.

Keeps account of attendance and loot for raids, parties, bgs, arenas and solo for questing.

Tracks the current Fear Ward's in the raid or party.

Says random things in chat when casting any spell or ability. Type "/ss help" for the user's manual.

Automatically and immediately cancels all in-game cinematics and movies

Switch macro depending on zones or BigWigs boss modules.

StarTip (Tooltips from Outerspace)