Enigma is a free Session Initiation Protocol (SIP) softphone available for your download. It can used to make Internet calls, establish conference and send instant messages to your buddies under the same SIP network. Choose your platform see features So whether your just having a simple voice conversation or talking to a friend over Instant Messaging, Enigma will leads you to a new path of communications.
Switchvox Softphone FREE A softphone app for use with Switchvox, Digium's award-winning IP PBX. Switchvox SMB version 6.0 or later is required. Please see the Switchvox Softphone Support link for how to set up and manage Switchvox to allow phone extensions to use the Switchvox Softphone. Download
GosSIP Mobile VoIP Dialer FREE GosSIP Softphone a Mobile VoIP/SIP Softphone which allows you to make long distance calls with good voice quality at unbeatable price. You need a valid username and password from your service provider to use this application. Mobile VoIP/SIP Softphone. Crystal Clear Voice, Cheap Rates! Value... Download