WowAce

Add TomTom Waypoints for Flight Masters in classic

DogChow

Sniff

Allows you to create icons, which can be customized greatly by user's input. CiR is more than just the usual cooldown tracker.

LD50_abar

FuBar_RecapFu

Assistance to the dance during Dread Spray

Tooltip scanning library.

Allows you to loot BoP items without prompting when not in a group or raid

Raid level alternative player power warning (Atramedes, Cho'gall, Lord Rhyolith)

DarkCandy

Provide plenty of links

Shows a window displaying any raid member below 10,000 health during the Chimaeron encounter.

A library to try to guess a level of a player.

Detox

RaidAgent

Reverse Engineering will drill down and search your tradeskills for their elements

Crowd-control monitor

"Shows Call To Arms status in an LDB data provider."

ImprovedTargetFrame