Rep2 displays a message, which shows how much reputation you gained, and how much is needed until the next standing.

Shows your current melee stats (Attack Power, Crit Chance, Hit Chance, Main and offhand weapon speed). By TheVaan

OOM

Display an informational fighter jet style HUD while flying or riding

mount and companion manager

Gear check for the Achievements 'A Tribute to Dedicated Insanity' and 'Herald of the Titans'.

Displays the time remaining before your (temporary) pet is dismissed.

IGuard will not let you sell things that you told it not too.

Tracks the current Fear Ward's in the raid or party.

Displays a numpad action bar.

Reputation Calculator

Tongues

An interface for managing teleportation spells and items.

Designed to display clusters of players as counters that increment when players are close to each other.

The ultimate Death Knight runic experience.

View an image of your guild vault from anywhere.

Displays friend notes in unit tooltips, at logon, and in /who results.

It can be used to overcome the ignore list size limitation.

A small text based progress bar system for target buffs.

Simple, light-weight, LDB-enabled timer that tracks how long you spend in combat

Co-ordinated targetless Party and Raid wipe recovery. Evolved

Data Broker Display similar to FuBar

Tracks your repeated daily tasks so you don't forget!

Textures for Sunn - Viewport Art (SunnArt)