WowAce

WFtotem

Eliminates the spam from the chatframe and sums it up in a broker plugin.

Displays how much total honor you have from all sources.

Custom minimalistic nameplates

Reports in raid chat whenever a raid member "fails." /EnsidiaFailsWotLK to configure.

For Developers (of Addons which uses LibWho-2.0): show queues and queries in realtime

Counts stacked lifeblooms and uses progressive colors to indicate the active number of HOTs.

Automatically accepts and turns in the Holiday "fly around the world" quests.

Replacement for WoW's flash/fade functions.

Armored man and paper doll durability modifier

Helps to find other player's alts.

ag_Pimpster

EquivalencePoints

Niagara

Voyeur

Replaces the SkadaAbsorbs module with one that acts more like SkadaHealing, but includes shields.

RotLatency keeps track of your reaction to cooldown expiration.

Repairs your items automatically upon visiting a vendor.

WhiteboardNG

Skip the gossip and select the normal NPC action