Adium is an Open source multi-protocol instant messaging client for Mac OS X, supports MSN, Jabber, Yahoo! and other networks.

Bit Chat is a secure, peer-to-peer, open source instant messenger with end-to-end encryption.

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

Conversations is an open source XMPP/Jabber client for the Android platform.

Digsby provides you with IM, email and Social networks in one easy to use application.

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

iMessage is an instant messaging service.

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

Coccinella is a free and open-source cross-platform client for the XMPP/Jabber-instant messaging-protocol.

Dasher Messenger provids a way to message friends.

Empathy is an instant messaging (IM) and voice over IP (VoIP) client which supports text, voice, video, file transfers, and inter-application communication ov…

Finch is a console-based IM program that lets you sign on to AIM, Jabber, MSN, Yahoo!, and other IM networks. It runs on Unixes. It uses GLib and ncurses.