WowAce

RootsBidder

LDB display of currencies, gold totals and session / daily / weekly statistics for all characters on a server.

Tracks interrupts

Simplifies GDKP bidding processes

AutoMagicly clicks though Daily Quests, and Turns them In.

Resizes some default UI frames (GuildUI, LootFrame, RaidInfo, TradeSkillUI and TrainerUI) to show more lines

Replacement for default bags.

Shows the minimum durability of equipped items on the stats frame.

Keeps track of HoTs, DoTs, Buffs and Cooldowns. With audio and text alerts to refresh them.

Fancy up the ExtraActionButton frame

Displays friend notes in unit tooltips, at logon, and in /who results.

SurgeonGeneral

Provides LibPeriodicTable-3.1 item filters for AdiBags.

Angry Raid Points Client

FuBar_ItemBonusesFu

Stores a browsable database of spells that mobs cast

Cartographer_Routes

FuBar_MicroMenuFu

A customizable casting bar replacement for TBC Classic & Classic WoW

Shows the health of the player's current bodyguard.