WowAce

Shows your standings with the factions.

Helps you keep track of your experience.

Redirect character errors, system messages and information messages.

Library that handles chat output.

A UI for searching the guild roster.

Auto repair + shows durability.

Broker plugin to display player orientation

Make noise when the servr is going to restart

A simple combat log that displays events similar to SCT

Add item levels to Inventorian

A menu with useful searches for Inventorian

One large inventory.

Officially the original source of knowledge of where things are in Draenor during Warlords, in HandyNotes

Speed plugin for any DataBroker display.

PvE Status Frames

A library for transmitting and receiving latency information of players.

A library for transmitting and receiving durability information of players in your group.

Shared handling of media data (fonts, sounds, textures, ...) between addons.

Simple AceGUI3 dropdown item classes for font/statusbar/sound/etc.

Entertaining kill-shot notification.