Skype

Jitsi (previously SIP Communicator) is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, Yahoo! and many other useful features. Jitsi is...

Fring is a VoIP (voice over internet) app that allows you to make 2-way video calls, voice calls and live chat for free, from your phone or iPod. It offers …

Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323 and SIP protocols. It supports many audio and video …

Linphone is an internet phone or Voice Over IP phone (VoIP). With linphone you can communicate freely with people over the internet, with voice, video, and text instant messaging. Linphone …

Zoiper IAX & SIP multilanguage and multiplatform (Windows, Linux and Mac OS X) softphone is a VoIP soft client, meant to work with any IP-based communications systems and infrastructure. Zoiper …

MicroSIP - это портативный программный телефон SIP на основе стека PJSIP, доступного для Microsoft Windows. Он обеспечивает высокое качество вызовов VoIP на основе открытого протокола SIP.

Softphone for VoIP, CAPI und TAPI. This application enables voice connections to landline , cellular network and VoIP. Phoner can be used as softphone on stationary and mobilecomputer devices attached …

Tpad is a free program that uses the latest VoIP / SIP technology to bring free and crystal clear voice quality communications to any user all over the world. When …

Gizmo5 (formerly known as Gizmo Project ) is a Voice over Internet Protocol communications network and a proprietary freeware soft phone for that network. You can chat with Gizmo, MSN, …

pfingo (phone, freedom, Internet on the go), developed by Singapore's info-communications provider StarHub, delivers a suite of popular web-based services such as email (Google, Yahoo! or other email...

SIP Broker is a free service that provides unlimited VoIP calls to millions of people around the world. No signup is necessary. SIPBroker is a free open peering service. Unlke …

Voxalot is a global voice applications provider that offers value-added services and features to existing customers of Internet Telephony Service Providers (ITSPs). Members use their own ITSPs to make VoIP...

Lync enables users to communicate securely anywhere they have network connectivity, and automatically adapts to network conditions. The unified communications platform integrated into Microsoft Office includes...

Make cheap international calls from your mobile, landline or computer from as little as 0.4p per minute. Our call rates are up to 88% cheaper than the competition. Top up …

Zaplee is a global cloud-based PBX phone system. Our system works with Skype, Google Voice, SIP, VOIP, landline and mobile phones. We can provide phone numbers in over 60 countries …