WowAce

Fade Blizzard Raid Frames

ArenaMaster

Good looking, smoothy and helpful nameplates

Alternate Rune Display

A simple visual combat log with spell/skill icons for Classic WoW

Enemy team talent spec reporter

Shows the source of an item as a tooltip

A standalone (using the stopwatch) or plug-in for DBM which displays the duration of interrupts on incoming or outgoing spell-tree lockouts.

Displays the time until the next battle and more.

Displays your soulshards in better way.

Announces interrupts in the chat

Shows who controls Wintergrasp and the time until the next battle.

Detects specific CDs and spellcasts

LD50_abar

Desesperated announcing to clearly show the skillings of act inplay.

Shows loot information in item tooltips

Helps you decide which ability to use next according to priority you set

This addon helps us track Renewing Mist and Uplift for Mistweavers.

Antagonist

Map and mini-map class colors with combat indicator