WowAce

Minimal KoS-list-addon

Adds aggro coloring to oUF.

Creates parameterized AceGUI-3.0 editboxes with autocompletion

Filters unimportant Buffs.

See all incoming casts on your target. Also includes resurrection monitor. Uses libhealcomm-3.0 and librescomm-1.0

Allows raid leaders to view information on raid or guild member equipment information

LibRockLocale-1.0

Displays a variety of useful stats for tanking

Makes it very easy to collect rare battle pets.

Notifies you of new calendar event invites and reminds of upcoming events on all characters and realms

A library to convert ItemId to ItemId of player's faction

oUF Layout

A Coordinates Data Broker plugin.

StitchUI

Adds TargetIcon status to Grid2 (player / player-target).

A collection management library similar to .NET's System.Linq

Debuff Monitor: A Powerful & Configurable Raiding Tool

LDB display addon with one Blockoblock per plugin.

Congratulate people when they ding

Adds easier gear switching to FuBar.