FWD.Communicator (short for Free World Dialer) is a combination SIP and proprietary client which allows FWD users to call other FWD users and users of any SIP phone. The novelty of FWD.Communicator lies in its integration with other client software f...
Zoep, formerly known as Voipster, is capable of direct peer-to-peer calls with other Zoep users and SIP calls to users of any SIP capable hard or soft phone worldwide. Like Skype and Gizmo project they also offer Plain Old Telephone Service (POTS) co...
Sony IVE (Instant Video Everywhere) is a new entrant to the VoIP marketplace and is a collaboration between Sony and Glowpoint. As the name implies, Sony IVE is a combination video and VoIP client that allows full video call functionality to other So...
SJPhone is a deceptively simple VoIP client that supports the two main industry standards for call control - Session Initiation Protocol (SIP) and H.323. What this means is unlike the peer-to-peer based systems, SJPhone isn't limited to calls between...
Gizmo Project is a peer-to-peer system with support for the Session Initiation Protocol (SIP). SIP is a real time communication protocol for Voice over IP (VoIP). This is a great feature because it means that unlike <a href=http://www.goodgearguide.c...
Skype is the big name in peer-to-peer Internet telephony after hitting the headlines with its $2.6b sale to eBay - which seems unbelievable considering their main product is freely downloadable and so are most of their competitors. But what sets Skyp...