WowAce

Adds a confirmation dialog when crafting Bind-On-Pickup trade skill items

Adds a Friendly Fire mode and data collection to Skada.

obRaidAssist

ShadowGreenLight helps you decide if recasting SWP/Corruption is worthwhile

Displays a grid of guild ranks versus permissions.

BarAnnounce3

Tooltip scanning library.

lern2count adds ABinfo castcounts to spell and actions. It has a builtin reagentcount too.

GemList

Posts a BigBrother-QuickCheck to the raid-channel when a readycheck is started

Provides training reminders to help decipher the Blizzard Spell Alerts.

Combine

A library to return spell duration and debuff type of a spellID.

ItemEnchantApplication

LCDs for WoW

Calculates DKP based on Item Level

Shows the price of a single item in the Auction House.

Jigsaw

Assist you with faction transfers letting you know which mounts, spells, etc you have and what they will be swapped to.

Don't underestimate your little critters!