WowAce

Alert your friends when you ding, get an achivement, or get phat lewts!

An experience bar for classic that shows the entire process from 1-60

Should I send that recipe to my alt?

Remaining and rested XP Data Broker plugin.

Changes the quest log back to how it was before Patch 6.0.

A total number of quests Data Broker plugin.

Helper addon for the Zul'Drak daily "Troll Patrol: The Alchemist's Apprentice"

Notifies you of experience gains

Automatically select the most expensive quest reward.

Displays the zone level ranage of the zone you are in and also gives you a suggest zone and instances to be in.

Never forget which one in that 5-mob pull casts what spell again.

QuestAnnouncer

Dedicated to Lazybones of EU Khadgar who had the original idea as he can't find a damn thing in his bags. You're a great guy...

Shows on the minimap where to fetch Finklestein's reagents

An addon to keep track of your earned artifact power and present you relevant information.

LDB data source displaying rested XP for whole account

View party member quest logs

Quest helping: fetching items to use, that sort of thing.

Automates accepting and delivering all quests.

LibDataBroker plugin showing some random XP related data