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 Classic BIZ provides secure high-quality voice calls and conference, fax sending and receiving functionality, and enhanced IP-calling features wrapped in a compact interface and small download size.
Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports prot ...
Wire is a secure and private messenger for phones, tablets and desktop. Crystal clear voice and video calls, private group cha ...
SeaFour is the SeaFour.club community's chat engine, powered by Node.js and Socket.io. It's a socket webchat supporting aesthe ...
csipsimple will allow native sip for android device.
It relies on the pjsip SIP stack and use the pjsip-jni project. The use o ...
See up to 8 friends on live video while chatting with them! Create your own room (appear.in/your-room) and send the link on ch ...
Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the ...
3CXPhone is a free VoIP phone available for Windows, iPhone or any Android based smart phone such as Google Nexus, Sony Xperia ...
Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You c ...
Ring positions itself as a potential free Skype replacement Open Source and cross-platform. Ring gives you a full control over ...
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 ...
MicroSIP is a free portable SIP softphone for Windows based on PJSIP stack. It allowing to do high quality VoIP calls (P2P or ...