Used to work.

This software used to work well, but the quality has declined a great deal. I started using Bria instead, and I now have a flawless phone system. Groundwire started causing audio problem that I think are related to memory usage, as I noticed that quitting programs fixed the problem. I am giving it two extra stars because it worked reasonably well for two years.

Ghostio about Groundwire: VoIP SIP Softphone, v3.2