WowAce

Notifies you when you get aggro.

LibRockEvent-1.0

Action button layout and configuration

Auto-reply to people whispering you when you are fighting a boss, and send boss progress. Re-work of SimpleBossWhisperer by R...

Monitors the combatlog identifying players from the oposite faction near you.

Uses linear regression and a log of hitpoint values to estimate how long a boss has left to die and reach execute range.

PhatLoot

Takes a screenshot when you kill a boss or gain an achievement

FuBar_AlarmClockFu

Allows communication to be shared across realm through Battle.net.

Mana Regeneration Information

Add in keybindings to place raid marks on mouseover, or the target if there is no unit being moused over

Keeps track of important de-/buffs in a splash screen

Converts commonly used acronyms into hyperlinks.

StatFrameLib

Rawrkitty

MeleeFrame

The ultimate in lazy Ulduar raiding

All Flight Masters, flight duration and more.

Really very early stage. No, earlier than that.