WowAce

Hunter 'Misdirection' activity and cooldown monitoring for raids/groups. 'Readiness' aware.

Centralised management hub for small tweak, interface and utility addons.

AutoFIR

Checklist and notes addon.

SpellWatch

Percent

Display combo points for Arcane Blast debuffs

Grid2 LibDataBroker support

XML import library

Filters unimportant Buffs.

Displays the zone level ranage of the zone you are in and also gives you a suggest zone and instances to be in.

KivinSpamGuard

Automagically call who should cross over

Reports the total threat on a mob at the end of combat.

A Data Broker plugin to show AddOn memory usage.

FuBar_GemWatchFu

FuBar plugin for ItemRack v2.2+

Cartographer_Trainers

Adds pipes which can control arbitary other statuses (like toggle status on key or "in combat"-state).

Write event handlers in a simple GUI in-game