WowAce

Allows you to view all items from all your characters on the same account, when-ever and where-ever you want.

Parses ToC and adds About panel to Interface options

Plugs classical world style fonts into LibSharedMedia-3.0

Automatically enables or disables combat logging based on location.

Inventory Management with virtual bags divided into sections.

A library to provide unit-oriented tags to LibDogTag-3.0

A library to provide a markup syntax

Auto repair + shows durability.

Tracks herbs/ore/items that can be broken into component pieces

Another HUD addon

Reno is a slash-command that can patch predefined options in a macro to change which actions will be chosen.

Mutt (Macro Update Target Tool) provides slash-commands that can patch the predefined targets in your macros.

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

Adds spec switching support to individual AceDB-3.0 databases.

Enhances the default AddOns list.

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

Displays additional information for Mythic Keystone dungeons

Afflictions display and cleaning for solo, group and raid with advanced filtering and priority system.

Displays information about the current zone on the World Map, for WoW MoP Classic

Good old LibTourist-3.0 for WoW Classic Mists of Pandaria