WowAce

Clean looking square minimap with many options.

wRlog

Bidder for DKP points. Usable as standalone bidder, or with DKP - Manager to manage points.

Automatically sells low quality gray items and selected white items to the vendor.

Dropin replacement library for SetBackDrop

Allows customisation of login/logout system messages.

Gives equipped and overall iLvl to indicate the quality of a character's gear.

Makes grid QuickHealth aware

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

Fixes strata bugs in UI windows

RootsBidder

Short EPEEN

StatStain

Adds the toon name to the alert that your RealID friend has come online.

Adds 3 corner indicators to each corner of the Grid frames.

Shows who controls Wintergrasp and the time until the next battle.

Allows you to prevent addons from sending and receiving messages.

Displays performance-related stats for shadow priests.

Toggles player names.

Skills plugin for any DataBroker display.