WowAce

lern2count adds ABinfo castcounts to spell and actions. It has a builtin reagentcount too.

Quickly see what counter-combinations your epic followers cover and which ones are likely to get a new combination when rerol...

Makes the Blizzard options frame movable and resizable

Keeps track of your reagents for buffing.

Adds party/raid role icons in useful places

Fancy up the PlayerPowerBarAlt frame

AVR Encounters

Simplifies GDKP bidding processes

A collection of Rogue modules.

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

Raid Frames using the oUF framework.

Provides a LibDataBroker plugin for quick access to professions under Ackis Recipe List.

Proximo

A library to help with localization of classes.

Doublerightclick casting, autolure and sound enhancing

BuffMe

Announces Mage Spells in chat.

Show extra information about Jewels and Enchants in tooltips.

Speeds up triggering actions such as items or spells by triggering them on key/mouse down rather than release

Keeps track of time played and rested XP across your characters.