WowAce

aUF_Banzai

RefillRemind

Aggro Warning System for Parties and Raids.

Manages the SavedVariables of your addon with a layered hierarchy of settings.

Chat frame tweaking module for TweakHub.

Congratulate people when they ding

See all incoming casts on your target. Also includes resurrection monitor. Uses libhealcomm-3.0 and librescomm-1.0

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

Show a bar indicating the attack power gained from Vengeance.

LibRockDB-1.0

Skip the gossip and select the normal NPC action

Reserve raider tracking for EPGP.

Remaining and rested XP Data Broker plugin.

Status indicator that shows if a unit is hostile (probably mindcontrolled)

Allows communication to be shared across realm through Battle.net.

MaxStats

Adds a third text indicator to Grid.

Show a bar indicating the unit's Holy Power count.

TagCompiler-1.0

Adds notes to item tooltips