WowAce

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

Provides bang-whispers for your professions.

Converts incoming ALL CAPS CHAT into lowercase text.

A simple addon that warns you if your pet isn't attacking while you're in combat.

"Your quest log is full". How many quests do you have in your log?

FuBar_TinyTipFu

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

A data broker plugin showing your longest fight and your current fight time.

TickTo

LibRockDB-1.0

BigWigs_RazuviousAssistant

User-configurable protection for your inventory. Automatically buys back mistakenly sold items.

Action button layout and configuration

Skip the gossip and select the normal NPC action

A simple Fubar plugin for Cartographer_Routes to quickly show/hide routes in the current zone

Melee stats Data Broker plugin.

Relog

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

Try to keep them thar pets wrangled

A Coordinates Data Broker plugin.