Csicq is a client-server application that will enable connecting to the icq network using a Java applet without, violating the applet's security restrictions. The server side uses icqlib to maintain connection with the icq network.
This is a very simple android application that logs onto sourceforge. Please download it and check it out. This project is licensed under the GNU GPL 2.0 or greater license.
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JCollaborationFramework can be used, together with a Open Source XMPP Library, to establish a Collaboration Application for Chat, Collaborative WhiteBoard etc.
ROChat is a Internet Relay Chatapplication written in Java. It aims to provide it's users with ease of use and comfortable chatting. It is also the home of our library, jirclib.
Esfera is an open source project to create an instant messaging application with social networks features in a peer-to-peer scenario and an user-friendly JavaFx-based interface.
Yet Another Secure Chat
YASC is a scalable web-chat solution featuring a very flexible stand-alone server application and a client applet both written in Java.
The server can represent irc like chat style or even closed support chats for example.