Hangouts

Free

Hangouts is an instant messaging software developed by Google.

Trillian

Freemium

Trillian is a proprietary multiprotocol instant messaging application.

Imo

Free

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

IM+

Freemium

IM+ supports simultaneously major IM services, including Google Talk, Twitter DMs, Yahoo!, AIM/iChat, ICQ, Jabber (and Slack through Jabber), etc.

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…

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…

Free

Telegram is a free cloud-based instant messaging platform.

Viber

Freemium

Viber Free Messenger and Phone Calls.

Facebook Messenger

Free

Facebook Messenger is the official Facebook app that lets you have text conversations with all of your friends on the popular social network.

Linphone

Open Source

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

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.

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 …