WowAce

Search, filter and craft gems in the game!

Adds talent specialization role status to Grid.

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

SanityItemCache

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

Proximo

FuBar_ShardCountFu

FuBar_WhisperFu

Adds achievement reminders to BigWigs

Replacement for default Rune Frame and more.

AceBuffGroups

Display the global cooldown around your cursor. (+ other stuff)

A plugin for OneBag to make your keyring the same texture as OneBag/Bank.

Keeps track of time played and rested XP across your characters.

Helps you automate selling stuff.

A Mount and Companion manager

RaidSpy

Objective Tracker

Automagical macros for each talent tier.

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