WowAce

Assist you with faction transfers letting you know which mounts, spells, etc you have and what they will be swapped to.

Embeddable library to track raid/party roster

Aggro Warning System for Parties and Raids.

A variant of AceGUI's Frame container with an editable input field

WhisperBid

LDB display of the players current damage percent modifier

Suppress chat messages when specified items are looted

ArenaHistory

TunnelVision

Provides extended aura status settings.

TickTo

Converts incoming ALL CAPS CHAT into lowercase text.

Adds indicators to the sides of Grid frames.

NCHide

Shows guild and system message of the day only if either one of them has changed since the last login.

Skills plugin for any DataBroker display.

Library of data about what items tier tokens can be turned in for

MonkeyPirate

Provides bang-whispers for your professions.

Allows movement and scaling of class-specific resource displays