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

Bitmessage is a decentralized, encrypted, peer-to-peer, trustless communications protocol that can be used by one person to send encrypted messages to another…

Grape is an REST-like API framework for Ruby. It's designed to run on Rack or complement existing web application frameworks such as Rails and Sinatra by prov…

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

Dialog Messenger is a handy and feature-rich enterprise multi-device messenger available for server or cloud.

Discord is a freeware proprietary VoIP application designed for gaming communities.

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

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

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

Dasher Messenger provids a way to message friends.

Disa is your new messaging hub. Conversations from different services can seamlessly be joined together, or disbanded within seconds.

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