The every popular WowAceUpdater has only been for PC's until I found this option.
The mac version of this addon can be found here macaceupdater - Google Code
My friends on Mac's used to cry for ages at how quickly I updated my addons with the wowace updater, wishing they had a similar version for Macs.
Hope people find this useful, I know my guild has gotten tons of mileage from this find.
For quick refrence:
PC Version of WowAceUpdater: http://www.wowace.com/wiki/WinAceUpdater
Mac Version of WowAceUpdater: macaceupdater - Google Code