Skype
Freemium
Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.
Tox
Open Source
Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.
Jitsi
Open Source
Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.
Wire
Free
Wire is a cross-platform, encrypted instant messaging client created by Wire Swiss. It is available for iOS, Android, Linux, Windows, macOS and Web browser cl…
Fring
Freemium
Fring connects with Skype, MSN Messenger, ICQ and Google Talk from your iPhone.
CSipSimple
Open Source
CSipSimple is a Voice over Internet Protocol (VoIP) application for Google Android operating system using the Session Initiation Protocol (SIP).
Zoiper
Freemium
Zoiper is an easy to use sip video softphone, with excellent voice quality and easy to setup.
Hangouts
Free
Hangouts is an instant messaging software developed by Google.
Signal
Open Source
Signal is the most scalable encryption tool.
Linphone
Open Source
Linphone is a free voice over IP (VoIP) service and SIP client.
Ring
Open Source
Ring (SFLphone) is an open-source SIP-compatible softphone and instant messenger for Linux, Microsoft Windows, OS X and Android.
Voxeet
Free
Voxeet is VoIP web conferencing software that uses 3D high definition voice technology to produce immersive sound.
GoToMeeting
Freemium
GoToMeeting provides easy online meetings with HD video conferencing.
Toky
Freemium
Toky is an automation platform.
