WowAce

Keeps a list of all items you want and shows how much you need.

Tracks specialization and talent data for group members

Keeps track of time played and rested XP across your characters.

Replacement for WoW's flash/fade functions.

EyeCandy

Cartographer_Mailboxes

Recap

BananaBar2

Opens professions and shows their skill level.

RangeRecolor

FuBar_RLAssistFu

Prospecting and Disenchanting Aide

Instant PROC notification

TickTo

FuBar_NetStatsFu

Prompts for canceling of pet battles if no rare pet is found in the opposing team.

Angry Boss Reminders helps raiders switch to the proper talents, glyphs, and gear for each boss during a raid.

Hunter pet manager for any DataBroker(LDB) display.

A module that lets you find out what today's dailies are without having to visit the quest givers.

Keeps track of gold and cash flow across multiple characters