WowAce

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

Objective Tracker

A volume control for Data Broker.

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

Resizes some default UI frames (GuildUI, LootFrame, RaidInfo, TradeSkillUI and TrainerUI) to show more lines

Replacement for default Rune Frame and more.

Tracks profession specific cooldowns and items across all your characters

StatStain

Replacement for default bags.

AceBuffGroups

Capital Cities NPC Browser

Assister

Reno is a slash-command that can patch predefined options in a macro to change which abilities will be chosen.

Angry Boss Reminders helps raiders switch to the proper talents, glyphs, and gear for each boss during a raid.

Enables the filtering of items when you visit a vendor

Doublerightclick casting, autolure and sound enhancing

Shows your standings with the factions.

Disease Tracker for Death Knights.

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

Automatically and immediately cancels all in-game cinematics and movies