WowAce

Enables cooldown notification between players and allows party members access to each-others spell books.

ezIcons

Makes it very easy to collect rare battle pets.

Displays both Kalecgos and Sathrovarr the Corruptor hit points during the encounter.

Adds the "pixel perfect" font "C&C Red Alert" to LibSharedMedia

Color manipulation library.

Adds tooltip for debuffs (and other things? you found out: no).

LD50_ap

Really very early stage. No, earlier than that.

ChatAssist2Options

AceGUI-3.0-Search-EditBox

User-configurable protection for your inventory. Automatically buys back mistakenly sold items.

Configure which layout or profile to load on entering a zone

LibFuBarPlugin-3.0

Show who is targeted by at least one enemy, and the casting progress of the incoming spell.

Replacement for the default minimap.

Custom minimalistic nameplates

pMutilate

ViewAddonMessage

Critters