WowAce

Show item durability and quality in the character frame.

Co-ordinated targetless Party and Raid wipe recovery. Evolved

FuBar_BattlegroundFu

Keeps track of performance of memory, latency, and framerate.

A replacement tradeskill window for Classic

Reduces interface tedium by doing the little things for you.

ItemBonusLib

FlexBar2

Kaliban's Class Loot List Star Display

Keeps track of current money and all your characters on one realm.

OneBank3 will combine all the bank bags into one frame.

an embeddable library providing an abstraction layer for tracking and querying Blizzard's Nameplate frames with ease and effi...

Track of your tradeskills across characters, create small buttons for them and track cooldowns.

Raid Frames using the oUF framework.

Plays sound when a ready check, LFG queue, battleground queue, or world battleground queue pops even if you have sounds turne...

Henge

Says random things in chat when casting any spell or ability. Type "/ss help" for the user's manual.

Automatically turns on the combat log for selected raid and mythic+ instances.

Deathknight Rune Display

Shows skills in a tooltip and allows them to be used.