WowAce

RaidSpy

Rebuff yourself with the mousewheel.

FuBar_PTReagentFu

Raid Cooldowns

Mutt (Macro Update Target Tool) provides slash-commands that can patch the predefined targets in your macros.

Battleground Timers in a HUD around the Blizzard BG status

Hemlock

Simple display and management of Away / AFK / Busy / DND status via broker or minimap

Interacts with TinyTip modules, either integrated or standalone, to provide extra centralized functionality. Required for an ...

A simple interface for unitframe click casting.

PT3Bar

Incoming Heals

PetBar

Display the global cooldown around your cursor. (+ other stuff)

Keeps track of space left in your bags.

Various libraries based on LCD4Linux, offering users lower-level UI customizations.

Collect data about you myth+ challenges

Gathers statistics on certain chance-on-use spells, also known as procs.

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

Scans your Equipment for cumulative item bonuses and sums them up.