WowAce

Options for TinyTip

Shows a nice Soulstone Monitor.

Swiss Army knife for instances, including player tracking, ignore buttons, loot tracking, notes, and more.

Rawrkitty

Quest helping: fetching items to use, that sort of thing.

Adds indicators to the sides of Grid frames.

lern2count adds ABinfo castcounts to spell and actions. It has a builtin reagentcount too.

Light-weight enhanced casting bars

tekProber

Quixote

Lists and/or reminds people missing flasks or food buffs at every ready check.

LibRock-1.0

BuffMe

InstanceMaps

Adds Buff/Debuff icons to the grid frame.

LatencyAlert

AspectsBar

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

Marks the Balcony adds in the Horridon encounter

Simple loot specialisation display with selection in tooltip.