WowAce

FuBar_KCIFu

Congratulate people when they ding

TrickOrTreat

This is an add-on to block incoming guild/party/duel requests (except for friends/party/guild) (previously ASSBlock)

Show an in combat indicator

A library that maintains a cache of items and their types.

RepWatch

Clock plugin for any DataBroker display.

Displays both Kalecgos and Sathrovarr the Corruptor hit points during the encounter.

BetterMagnet

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

AllYouCanEat shows information about the following statistics: beverages, foods, bandage types, potions, elixirs and flasks.

Keeps an eye on someone's distance from you, and alerts you if they get too far.

ChatAssist2Options

Display combo points for Arcane Blast debuffs

Makes the Blizzard options frame movable and resizable

SpellEventsLib

Adds Buff/Debuff icons to the grid frame.

Simple and rich Death Knight rune customizations

CVarEditor