YateClient 4+

I agree with other reviews that the user-interface needs a bit of work. It would be great if we could type in the phone number via the keyboard rather than having to point and click. Also, after several tests, I also had the problem that the client never rang when people phoned my Google number. If the app would ring when people phoned me, I'd give it four stars. If the user interface was also prettier (like Growl Voice's user-interface), I'd give it 5 stars. It would also be cool if it supported SMSes on our Google phone numbers the way that Growl Voice supports SMS.
Phoning out worked perfectly for me though! I loved being able to make a call on my Google number without having to have GMail open. :-)

Overall very nice, moreover free. When closing the main window its impossible then to get it back, app is running but without window. It would be better if auto answer wil be placed on the surface but not in the settings. But again its free and great with my sip account. Thank You.

It's a great start with being able to Make and Receive calls via a desktop application, however it has a long way to go before it's really use worthy for those folks who use Google Voice as their primary work line (like me).

If making it a paid app means increasing the time the team has to work on it and make it really regular use worthy, then I would glady buy it!

The UI needs an overhaul, call handling needs major improvements, preferences could use some work with things like allowing to set the ring tone, and input/output settings, to name a couple.