WowAce

Displays an estimated time until you're out of mana

aUF_Layouts

NiHao

World of Warcraft Textmate Bundle

Show who is targeted by at least one enemy, and the casting progress of the incoming spell.

oUF_HolySmurf

Plays Overwatch sounds

Buff and debuff timers with bars or icons.

Buff/Debuff Library

Bio_Tint

Fixes the unintuitive and inconsistent behaviour of join as group for battlegrounds.

AutoGratz

With Mists of Pandaria Blizzard publish all characters from an account unless you disable that 'feature'. This addon warns you.

A bar for all diminishing returns. Maybe nice for Arena, but intended for the third boss of Trial of the Crusader

FuBar_DPS

Automate talking with the chatty gnome at Chimaeron's lair

FuBar_ChannelwatchFu

Add a more noticeable "ping" to the fishing bobber sound

GUI framework for the "Visor2" frame-modification AddOn (originally written by Tain, Rowne, Eraphine and Stylpe, the original...

GridStatusHealPriority