Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports prot ...

Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice ...

Wire is a secure and private messenger for phones, tablets and desktop. Crystal clear voice and video calls, private group cha ...

TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees ...

Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice call ...

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 ...

Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved ...

Zoiper IAX & SIP multilanguage and multiplatform (Windows, Linux and Mac OS X) softphone is a VoIP soft client, meant to w ...

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SM ...

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 ...

Open source Jabber (XMPP) client with multi-account support, clean and simple interface. Being both free (as in freedom!) and ...