Telegram is a free cloud-based instant messaging platform.

Viber Free Messenger and Phone Calls.

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…

KakaoTalk (Korean: 카카오톡), or sometimes KaTalk, is a free mobile instant messaging application for smartphones with free text and free call features.

Bleep is a fun and easy instant messaging app that is completely private.

WhatsApp Messenger is an instant messaging platform owned by Facebook.

Signal is the most scalable encryption tool.

WeChat is a social media with instant messaging, commerce and payment services application.

Wickr is an instant messenger application.