WowAce

Mini calculator

A simple buff remover.

Warn players about a specific aura (buff/debuff) at a specific stack via whispers and icons.

Smooth combat HUD based on ArcHUD2

ClearFont2_FontPack

Printing unknown AddonPrefixes to your chat

Show a bar indicating the unit's Soul Shard count.

AssignAssist

Tank statistics Data Broker plugin.

Shows what stat was reforged in item tooltips.

fixes the issue with InterfaceOptionsFrame_OpenToCategory not actually opening the Category (and not even scrolling to it)

Torta

Shift-clicking on a user name in chat shows a tooltip with their whois information.

autoLFG

LootWhore

ForceEnchant

Makes it very easy to collect rare battle pets.

Echos quest objective completion to your party

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

I've invented a device that tells you when reactive abilities are available!