Voice Mac – Google Voice App

Description
Voice Mac is a client for Google Voice the features are described below.
Short Message Service (SMS).
Voicemail.
Calling people using your forwarding phones.
Contact list with the options of Google Contacts or Address Book.
Contact Filter.
Growl for SMS and Voicemail.
SMS History so you can go and view old SMS.
(Link: Voice Mac – Google Voice App)