WowAce

Timer bars with that extra sweetness.

UIFrameFlash to Animation conversion library for Floating Chat Frame functions.

Allows addons to easily create a lightweight minimap icon as an alternative to heavier LDB displays.

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

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

A library for transmitting and receiving latency information of players.

Library that handles chat output.

Enhances the default AddOns list.

Adds spec switching support to individual AceDB-3.0 databases.

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

Adds countdown voices from Heroes of the Storm to BigWigs for all supported locales.

Adds countdown voices from the heroes in Overwatch to BigWigs.

Keeps track of group members and keeps an up-to-date cache of their specialization and talents.

Dog-themed unit frames. Woof. Arf. Yip.

Modular damage meter.

BabiiSkulls

Fancy up the ExtraActionButton frame

Automagical macros for each talent tier.

Visual loot monitor

Show order resources and troop counts in the Order Hall minimap icon tooltip.