WowAce

Heal and decurse by clicking on customizable raid/party unit frames

Configuration for LibToast notifications.

CharScanner scans Basic Character Data, Talent Specifications, Equipment, PvE/PvP Achievements, PvE Boss Kill Statistics and ...

LilSparky's Workshop mod for Trade Skills

EUF is an enhance of wow original unit frames, provides hp with both value and %, and optional 3D portrait. Simple and Useful.

AspectsBar

Enable/Disable addons for your character in game

Auto sizes frame layout depending on group/raid size or predefined zone data

Allows the user to customize the the tooltip with lua-scripts

Prints a message in your default chat frame when someone in your group gains an aura.

Adds unreal tournament style sounds to PvP encounters.

TrackingBar

ShadowGreenLight helps you decide if recasting SWP/Corruption is worthwhile

Buffalo

Tooltip scanning library.

LibRock-1.0

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

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

Adds options to create customized layouts from within grid.

T_ItemInfo