WowAce

RBM_AbilityWatch

On login, displays changes to your guild since the last time you logged in.

Tracks specialization and talent data for group members

Never miss an Brain Freeze, Hot Streak or Missle Barrage proc

Simple Bars for your Shaman's weapon buffs and shield spells.

A boss encounter engine used by other add-ons

A frame with a text that gives you the amount absorb left on target, or in TankMode absorbs left on yourself.

Enhances the Equipment Manager to let you control the helm/cloak visibility for each set.

Adds achievement reminders to BigWigs

Upcoming events.

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

Shows optimal target to use various area healing spells

FuBar_EpicCountFu

Display an arrow that points to a raid/party member anchored to raid frames

FuBar_AssistFu

Tells you which blob to kill at the Yor'sahj encounter in Dragon Soul.

LibQTipClick-1.0

Right-click on minimap blips to open a targeting menu (out of combat).

Ignore more than 49 people, autoshared between your alts

Library providing mappings between trade skill recipes, spells and created items