WowAce

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

GrindStatus

WQA helps you find world quest groups easily. Works after the 4/28 group finder changes.

Tells you the Tiller, what food they like, and if you have fed them today for the quests A Dish for ...

Quest library for mob location and other information

Count and Track Daily Quests

Makes the message dialog movable

Improved Quest Tracker

Shows your standings with the factions.

Shows your standings with the factions.

Adds a button to the quest completion interface which allows you to auto equips selected quest Item after completion

Powerleveling guide framework

Provides training reminders to help decipher the Blizzard Spell Alerts.

OneChoice tries to help you reduce quest reward choices down to, ideally, one choice.

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

Objective Tracker

Helps you keep track of your experience.

Quest information

Remaining and rested XP Data Broker plugin.

LibDataBroker plugin showing some random XP related data