Free

Telegram is a free cloud-based instant messaging platform.

Imo

Free

Imo free video calls and chat is a kind of Communication apps for Android.

LINE

Freemium

LINE is a new communication app which allows you to make free voice calls and send free messages whenever and wherever you are.

ICQ

Free

ICQ is an open source instant messaging software.

ChatSecure

Open Source

ChatSecure is a messaging application for iOS which allows OTR and OMEMO encryption for the XMPP protocol.

Threema

Commercial

Threema is an encrypted instant messaging application for iOS, Android and Windows Phone.

Tango

Freemium

Tango is the messaging app with the best video calling. All messages and calls are free.

Sicher

Commercial

Sicher is a freeware instant messaging application for iOS, Android, and Windows Phone. Sicher allows users to exchange end-to-end encrypted text messages, me…

Wickr

Free

Wickr is an instant messenger application.

Trillian

Freemium

Trillian is a proprietary multiprotocol instant messaging application.

Linphone

Open Source

Linphone is a free voice over IP (VoIP) service and SIP client.

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…

WeChat

Freemium

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

iMessage

Free

iMessage is an instant messaging service.

Matrix.org

Open Source

Matrix is an open protocol for real-time communication. It is designed to allow users with accounts at one communications service provider to communicate with…

BlackBerry Messenger

Freemium

BlackBerry Messenger, also known as BBM is an instant messenger and videotelephony application included on BlackBerry devices that allows messaging and voice …