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, AIM, Yahoo, and Jabber contacts and call any number or Gizmo contacts from your mobile phone. On November 12, 2009, Google announced that it had acquired Gizmo5.
Tkabber is a Free and Open Source client for the Jabber instant messaging system. Its writen in Tcl/Tk, and works on many plat ...
Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice ...
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 ...
QuteCom is a community of enthusiasts and developers, creating free software products related to communication over IP. The fl ...
Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice call ...
Zoiper IAX & SIP multilanguage and multiplatform (Windows, Linux and Mac OS X) softphone is a VoIP soft client, meant to w ...
Firefly softphone is the easiest way to try Freshtel's great service from the comfort of your PC. Available completely free it ...
Cloud Phone is a virtual pbx that enables small businesses to quickly, easily, and affordably set up a business phone solution ...
Tpad is a free program that uses the latest VoIP / SIP technology to bring free and crystal clear voice quality communications ...
Message and video chat with your friends and family for free.
Features
Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You c ...
Linphone is an internet phone or Voice Over IP phone (VoIP). With Linphone you can communicate freely with people over the int ...
Nimbuzz offers limited availablility free calls and limited availability free text messaging for users via 3G and WiFi. Calls ...