<strong>If you are currently using a Video/Voice Calling app like Skype, Viber or Google Hangouts, you should pick an alternative here.</strong> Please note that many of the above instant messengers also support <spanclass="badge badge-success">VoIP</span>. The software listed below are <em>primarily</em> Voice/Video focused.
description="Linphone is an open source SIP Phone and a free voice over IP service, available on mobile and desktop environments and on web browsers. It supports ZRTP for end-to-end encrypted voice and video communication."
description="Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming. Note that while Mumble doesn't log messages or record by default, <ahref=\"https://github.com/mumble-voip/mumble/issues/1813\">it's missing end-to-end encryption</a>, so self-hosting is recommended."
<li><ahref="https://jitsi.org/">Jitsi Meet</a> - Jitsi Meet is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application. <spanclass="badge badge-warning"data-toggle="tooltip"title="Our Firefox tweaks recommend disabling WebRTC as it can be used to leak your IP address even behind a VPN, which is why Tor Browser disables it.">Requires WebRTC</span></li>