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 codecs, and is interoperable with other SIP compliant software and also with Microsoft NetMeeting. More info »
Skype is a proprietary software application that offers free Skype-to-Skype calls and low-cost local, national and international calls to both traditional land-line telephones and mobile phones. Additional features inclu ...
Nimbuzz offers free calls and text messaging to other Nimbuzz users over 3G and WiFi. You can also can call mobile and landline phones for as low as 2 cents/minute with NimbuzzOut. Nimbuzz works with every popular smartp ...
SIP Communicator is changing its name to Jitsi. Jitsi is an audio/video Internet phone and instant messenger that supports some of the most popular VoIP and instant messaging protocols such as SIP, Jabber, AIM/ICQ, MSN, ...
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 makes use of the SIP protocol , ...
QuteCom is a community of enthusiasts and developers, creating free software products related to communication over IP. The flagship product of the QuteCom project is a softphone which allows you to make free PC to PC vi ...
Combining voice calls, video calls and Instant Messaging in a simple interface, CounterPath's X-Lite helps you seamlessly transition from a traditional phone environment into the world of Voice over IP.The latest rel ...
Blink, a state of the art, easy to use SIP client. You can use it with any SIP provider or its own fully-featured SIP service. Voice over IP * HD Audio (G722/Speex)* PSTN Compatible (G711)* Encryption (sRTP)* NAT Travers ...
TokBox is a web-based video chat application that lets you connect with your friends or have meetings in seconds. Share links and videos.
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 you use the free Tpad software, you can call regular pho ...
SFLphone is a robust standards-compliant enterprise softphone, for desktop and embedded systems. It is designed to handle several hundreds of calls a day. SFLphone is available under the GNU GPL license, version 3.Featur ...
Free live webcam video chat room software for multiple desktop platforms including mobile platforms like iOS and Windows Mobile. Make free live audio & video calls world-wide or Join live webcam chat rooms or host yo ...
Small program mainly aimed to provide a simple user interface for making VoIP calls with Asterisk PBX (an open source VoIP PBX).
Tango brings you free, high-quality mobile video calls over 3G and Wi-Fi! Tango is an entertaining video calling service that connects people around the world in an exhilarating new way. It’s easy to use and it works.
MicroSIP is a free portable SIP softphone for Windows based on PJSIP stack. It allowing to do high quality VoIP calls (p2p or on regular telephones) via open SIP protocol. From cloud of SIP providers you can choose best ...
ShMessenger Mobile is a free instant messaging client for mobile phones, which supports YMSG (Yahoo!), MSN and GTalk protocols. In just a few minutes, you can chat with your friends on Yahoo!, MSN or GTalk from your mobi ...
Cheap phone calls and text messages with Jumblo. Call your online friends for free as well as a special selection of popular international destinations.
Chatzy is a free private chat service which you can use to communicate with people you already know or people who visits your blog or website. With Chatzy you can create a chatroom and send out email invitations very qui ...
Discover, connect, and send messages to people nearby. Upload photos and update your Twitter account. Contact old friends and make new ones, all with Twinkle, the location-aware network for the iPhone and iPod touch.
Twinkle is a soft phone for your voice over IP communcations using the SIP protocol. You can use it for direct IP phone to IP phone communication or in a network using a SIP proxy to route your calls.
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