WowAce

Augmented Virtual Reality. Draw and add markers in the 3d world.

A library to help with localization of Archeology dig sites

nRaidTracker

Fixes strata bugs in UI windows

Prints a message in your default chat frame when someone in your group gains an aura.

Shows your standings with the factions.

Reminds you if your flask/elixir and/or Augmentation Rune and/orfood buff is about to expire or has expired

Give logical progression of Mining, Herbalism & Skinning. Will not be updated with WoD zones

JasonQuest

Keeps track of resurrection spells cast in a group

Displays the time until the next battle and more.

Display and change minimap tracking modes from your FuBar.

A fully featured library tracking all ongoing absorb effects

Keep your pet fed

Replacement for the default nameplates.

BossList

Keeps track of healing spells cast by everyone in a group.

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

Instant PROC notification

EUF is an enhance of wow original unit frames, provides hp with both value and %, and optional 3D portrait. Simple and Useful.