WowAce

Where the Lost and Found objects are

Where the Treasure Hunter objects are in Draenor

Find five Ephemeral Crystals, get a pink hippogryph

HideTalkingHead

Improved Questing Experience

Show all the leyline taps in Suramar

Show all the orbs for triggering Kosumoth

Adds World Quests to the quest list

Show where the chests are for Withered Army Training

Bayi's Extended Questlog

Database of Trainer locations for HandyNotes

Quest History tracker and shows lists of quests in each category

Makes the message dialog movable

Point to quest POIs on your minimap

Objective Tracker

Track time played, rested XP and money for all characters

Provides database of quest giving npcs/mobs/objects for display on the World Map/Minimap

QuestLog

Contains all addons I used to have rolled into one, with options.

Pins on the World Map for quests you have not completed yet