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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...

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. …

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 …

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 …

Tkabber is a Free and Open Source client for the Jabber instant messaging system. Its writen in Tcl/Tk, and works on many platforms (tested on Linux, FreeBSD, NetBSD, Solaris, MacOS …

Manage all your existing IM and social network accounts with only one easy-to-use application. Free video calls and video conferences as well as goober Premium VoIP, and much more included! …

Allegedly "cheap" phone calls with Jumblo. WARNING: expect to have payments disappear with zero recourse and have "free" minutes widely unavailable like any other betamax clone scam.

Logitech Vid HD is free for anyone with any Logitech webcam—and any other manufacturer’s webcam—, whether that webcam is brand new, or one you’ve had for a while. As Logitech®, …

Small program mainly aimed to provide a simple user interface for making VoIP calls with Asterisk PBX (an open source VoIP PBX).

Messenger:mac (or Microsoft Messenger for Mac) is Microsofts version of the popular Windows Live Messenger for the Mac platform.

Qnext unifies communication, broadcasting & sharing. Universal Instant Messenger (MSN, Yahoo!, AIM, ICQ, Jabber, iChat & IRC), Multi Audio & Video Conferencing, File Transfer, File & Photo...

Firefly softphone is the easiest way to try Freshtel's great service from the comfort of your PC. Available completely free it offers many advanced features such as conference calling, call …

With FriendCaller Web Phone, you can make free VoIP calls and cheap phone calls. Use it from a browser, a iPhone, iPod Touch, iPad, Android, Nokia SIP Phone. Talk to …

Portuguese messenger publish by SAPO. It has a sending SMS feature and the user can make audio-visual calls. GTalk can be integrated with this instant messaging program.

Paltalk is an instant messaging service that enables users to communicate via internet chat, voice and video chat. It offers chat rooms and the ability for users to create their …

Vidyo is Videoconferencing software and service for both desktop and mobile.