WowAce

Automatically sells low quality gray items and selected white items to the vendor.

Hotkey interface for spells, macros, other clickables.

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

Don't underestimate your little critters!

HealComm-2.0

Makes your item stats shine!

Enables the filtering of items when you visit a vendor

Note + rep tracking for players, with guild data sharing.

cgCrafty

FuBar_UIReloadFu

FuBar_ShardCountFu

opens/closes all bags when at merchant (instead of only the backpack)

FuBar_uFriends

Provides information about the player's bodyguard.

Considers an item against all the items you have to determine whether or not it is an upgrade

Powerleveling guide framework

TalentWhisper

Add TomTom Waypoints for Flight Masters in classic

NRT_EPGP

SanityItemCache