WowAce

SRA

Provide plenty of links

Keeps track of durability and pops up a dialog to repair when you go to a vendor who can.

CraftList

Recap

Displays events from Calendar for upcoming week in tooltip.

Considers an item against all the items you have to determine whether or not it is an upgrade

Add-on that shows which battle pets can be farmed this week

Simplifies GDKP bidding processes

FuBar_AnkhTimerFu

Good old LibTourist-3.0 for WoW Classic Era

Adds two icon indicators to each corner (total: 8 icon indicators).

RoleCall allows you to easily see the talent specs and roles of everyone in your group.

LDB data source displaying rested XP for whole account

A Data Broker display for combat statistics.

Gives a score for your kit allowing easy comparison with others, also colour codes kit based on appropriateness for your level.

NameTagToggle

Client for MagicDKP which handles standby calls and bidding on items.

Track any items you want in a tooltip

RangeRecolor