Skype
Freemium
Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.
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…
Blink
Freemium
Blink is the best real-time communications client using the SIP protocol.
YakYak
Open Source
YakYak is a desktop chat client for Google Hangouts.
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.
Zoiper
Freemium
Zoiper is an easy to use sip video softphone, with excellent voice quality and easy to setup.
Zulip
Open Source
Zulip is a chat and collaborative software.
