WowAce

A library that handles the basics of "window" style frames

HiveMind

FuBar_ItemDBFu

Monitors for friendly deaths and announces them as in Myth: The Fallen Lords

Monk Brewmaster/WindWalker Priority and Buff/Debuff Tracking Tool

Add-on that shows which mounts can be farmed this week

Combat log evolved.

Smooth group roll frames

Simple display and management of Away / AFK / Busy / DND status via broker or minimap

Displays the zone level ranage of the zone you are in and also gives you a suggest zone and instances to be in.

Generates and posts random Chuck Norris facts to a specified chat medium.

FuBar_RaidBuffFu

FuBar_AlchemyFu

Heads-up minimap display

Separate indicator for your HoTs with timer.

Assister

FuBar_CheckStoneFu

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

Cartographer_Routes

Dropdown library for Ace3 options, extensible to other options formats. Works ok.