JIMO(Java-based Instant Messenger One), supports multiple protocols via services, including AIM, MSN, Yahoo, IRC. It is flexible through its plugin architecture, with an intelligent agent, Chatbot.
YAJT is achronim of Yet Another JSON Toolkit, is a 100% pure Javalibrary set for manipulating data in the JSON format. Contained features: a parser generated by an ANTLR grammar, an "JSON query path" processor generated by an ANTLR grammar and more
Duke is an IRC-bot framework based on PircBot library. It provides extensible IRC messages handling bus, made of modules integrated by Spring IoC container.
Shibboleth Jabber Instant Messaging agent - utilizes Jabber IM with out-of-band Shibboleth authentication for secure anonymous chat (e.g. between an authenticated library user and a librarian), with programmable behaviour.
GoChat is a modular multi-user, multi channel, platform-independent, high-performant and scalable web-based chat system which only needs a web browser on the client side.
Samsha is a instant messaging plugin for eclipse. It is especially suited for use with the Jabber protocol, however, it supports all important IM protocols (MSN, ICQ, AIM etc.) too. Due to its deliberate architecture it is easily extendable.
Hollaka Hollala is a chatbot engine and IRC bot. The chatbot engine uses a knowledge base organized in an XML file and WordNet for dictionary lookup. The IRC Bot has some WordNet- and Web-based functionality and is hot-extensible through Ruby programs.
JAIM is a cross-platorm AIM client. The GUI is in Swing. Network connectivity is provided via a library from the JAIMbot project. Currently seeking developers. It's goal is to produce a full-featured java AIM client.
moepServices is a J2EE-based IRCService currently only providing basic functions for AuthServ, ChanServ and MemoServ. The main advantage compared to other IRCServices is the possibility to retrieve and manipulate almost all data via Sessionbeans.
UChat is a JAVA and JPF (Java Plugin Framework) based application, that aims to provide a modular structure for chat APIs. SIP is mostly completly integrated (JAIN-SIP API from NIST), and functional (text and audio chat). Jabber (Muse API) is on the way
The Floranta libraries provide components for building Rich Client Wikis using AJAX or Java. Floranta clients can be embedded in any webpage (even plain html) and allow users to leave notes, images, cards, etc on the pages. Eg: http://www.floranta.com
Real-Time Collaboration (RTC) and conferencing project. This product has been deprecated. Please see the replacement product, CoolCollaborator, at http://coolcollaboratr.sourceforge.net/
JXTA Instant Messenger (J.I.M) is a project that aims to establish a server free, pure P2P Instant Messaging system. It is based on Java, JXTA (www.jxta.org) and the Java Cryptography Extension JCE and provides a nice Swing based GUI.
ivata groupware is a Groupware/Exchange/Intranet/Extranet system. Includes contacts/address book, calendar, library CMS and webmail. Java J2EE, EJB (optional), Hibernate, Struts and JSP. Runs on WebSphere/Tomcat/Resin/JBoss. See groupware.ivata.org.
XNap is a Java plugin-based peer-to-peer (P2P) framework and client including an OpenNap plugin with multiple server support, as well as Gnutella, giFT (OpenFT), IRC, ICQ and an OverNet plugin. XNap provides resuming, chat, hotlist and a media library.
Katama is a modular bot written in Java that provides a powerful framework for user management, commands, a virtual file system (no joke, read about it!), dynamically loadable modules for IRC, AIM, and anything else you might want a bot to do.
IRCscraper is an attempt to create an IRC client written in Java, making it possible to run the client from an USB stick on most operating systems.
Furthermore its GUI is meant to be user friendly and logically structured.
libairc is a Java framework for IRC clients and bots with advanced features including a full-fledged prioritized queue, full-blown DCC support including bandwidth throttling, and much more
Driver support for 3D Controller Hardware. We hope to support SDL Input, DirectInput, and other major controller API's including game consoles and embedded systems.
Yet another Jabber library, written in Java (to the 1.1 spec). The goal of which is to be as simple to use and understand as possible. (Depends on the SSTTR JavaLibrary).
OmegaChat is an open source generic framework for building malleable structured chat applications. It is mainly designed for educational settings. It runs in standalone mode (java application) or in servlet-embedded mode (applet+servlet+http tunneling).
Black Rain, a Java-based RPG using a hex-tiled game map, with many different items available in-game. Black Rain will use an unique object-modification and combination engine to allow objects in the game to be combined, changed, and upgraded.