WowAce

Bulk mail sending made really easy

LiteStep skins for Masque.

OneBag is a replacement for the default game bags that combines all the bags into one frame.

Checks Raid Buffs/Flasks/Consumables. Tunable alerts for misdirects, taunts, cc breakage, rez, dispel and interrupt

A library to determine estimated range.

Display aura information inside action buttons

AutoMagicly clicks though Daily Quests, and Turns them In.

Automatically turns on the combat log for selected raid and mythic+ instances.

Display Cooldown Count of Spell Icon and Item

StarTip (Tooltips from Outerspace)

Violation

Tooltip of awesomeness. Moo. It'll graze your pasture.

Angry Assignments

Bayi's Extended Questlog

A library to help with localization of factions.

Calculates and shows your TankPoints in the PaperDall Frame.

Raid Frames using the oUF framework.

AddOn development framework

Plugs classical world style fonts into LibSharedMedia-3.0

Displays Pet Info for Hunters and Warlocks. Also keeps track of Stables and Pet and Demon skills.