WowAce

Displays info about who rolled Need/Greed/Pass on items that are currently rolled for

Accelerates Camera Zooming

Keeps track of honor, PvP statistics, BG Marks, and Arena points.

FuBar_tTracker

Displays information about the current zone on the World Map for WoW Classic Era

Adds on-screen buttons for the farming tools and seeds.

Fixes strata bugs in UI windows

Keep your pet fed

Displays friend notes in unit tooltips, at logon, and in /who results.

Monitor the remaining duration on your Mysterious Eggs and other perishable items.

A fully featured library tracking all ongoing absorb effects

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

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

nRaidTracker

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

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

Used to visualize and change values of variables/variable-trees in game

Automatically sells low quality gray items and selected white items to the vendor.

A library to help with localization of Archeology dig sites

Enables the filtering of items when you visit a vendor