sip server freeware downloads
Blink Cocoa for Mac OS X
0.23.2 freeware download... use and feature-full Blink is the best SIP client for Mac. You can use it with any SIP provider or its own fully-featured SIP service. ...
4PSA VoipNow Express
1.6.2 freeware download4PSA VoipNow is the leading Linux IP PBX server software for Hosting and Internet Telphony Service Providers, ... or can be used as a standalone PBX server in a company office. 4PSA VoipNow Express free ...