GrowlVoice is an intuitive and fully-featured Google Voice client that brings the power of Google Voice to your Mac's menu bar.
• Send texts and initiate calls in seconds flat
• Quickly read and reply to text messages
• Listen to voicemails while you read their transcripts
• Manage and search your inbox
• Receive instant and unobtrusive notifications of new messages
• Match any desktop with beautiful light and dark themes
• Keep GrowlVoice hidden in your menu bar until you need it
• Add multiple Google Voice accounts
• Use Google Contacts or your Mac's Address Book
• Configure as you desire with dozens of preferences
• Call and text even faster with custom keyboard shortcuts
"GrowlVoice takes things even further by letting you actually use many of Google Voice’s features." "★★★★½"—MacWorld Magazine
While Google Voice already has a solid webapp, you can only do so much from the browser.