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Terra Tenebrae is a free (as freedom) multi-Players RPG game engine based on client/server technology. The assets used are in licenses CC0, CC-by, CC-by-sa or GPL.
A small ICS chess client written in Java, not so large as Jin and nicer looking. The main thing will be to write code for various chess servers. Expected features include game saving as PGN and support for most commands of various ICS servers.
An alternative/custom Minecraft server, written in Java, compatible with the original protocol. OpenCraft is built upon Apache MINA, SLF4J, Jython and XStream. The aim is to have features not in the official server distribution, like antigrief/scripting.
Atera all-in-one platform IT management software with AI agents
Ideal for internal IT departments or managed service providers (MSPs)
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This application is designed to facilitate the hosting of minecraft servers on a single computer and managing them remotely through a Java applet or jar interface.
UPDATE (19 Oct, 2012): As you can probably tell, this project is no longer maintained. If you wish to alter the source code, feel free. If you would like to contribute to the project, email me at raenottingham at gmail dot com and I will add you as a contributor.
PokerApp is a client/server multiplayer poker game that can support up to 8 network opponents. Currently supports 18 games including Texas Hold'Em, Omaha Hold'Em, Omaha 8, Seven Card Stud, and Five Card Draw.
Java based client / server online games engine & API for easy creation/running of real-time multiplayer games. Games include Battleships, Camelot, Checkers, Chess, Connect 4, Dots, Go, Octagons, Texas Hold'em Poker, Reversi, Spades, Tetris & Tic-tac-toe
Java container-based server and client to allow pen-and-paper tabletop gaming across the Internet. This is a direct offshoot of the OpenRPG product, but is not endorsed by that team.
This is the Java version of XPilot, a free multi player online third-person two-dimensional space shooter. It (will) include both a client and a server part and is planned to interface to the meta server via XPilotPanel.
Marmalius est un projet de jeu 3d (isometrique) multi-joueur comprenant un serveur et un client Pour l'instant seul le serveur est en developpement. Le projet Marmalius est un projet open source d'un jeu ressemblant a Runescape
GUIFugue (eventually to become a part of JNIFugue) is a Java-based GUI intended to complement usage of the MUD client, TinyFugue. Using scripting in TinyFugue, users will be able to customize a GUI down to its most basic behaviors.
Project World of Dragons ( Projeto Mundo dos Dragoes ) - Free Open-Source with two clients, a 2D Client and one 3D Client - The 2D Client is created with SDL, SDL libraries, GuiChan, etc, and the 3D Client is Written in C++ with OGRE3D, RakNet, CEGUI, LU
This project aims to create a Multi User Dungeon Client written in Java. It provides a extendable PlugIn-System , colorization of incoming text and macros.
It is designed for use with the Austrian MUD SilberLand but may be used to connect to any text MU
Text-based RPG engine both on the server side and client side. Allows full customization and control of the world objects including: zones, monsters, characters, NPCs, items, quests, etc. All of this within a desktop application against a MySQL DB.
Scalable real time space strategy. Botes(for AI developers) and people can play in same time. Server based on Java. The first client based on WEB with AJAX technology. Protocol based on JSON.
Deep Matrix is a Java chat-client and server system that turns 3D VRML/X3D worlds in to multi-user enviroments. The current version "Deep MatrixIP9" works on Windows, Mac, and Linux OS systems.
DEPRECATED!
This program is replaced by Gamer's Proxy:
https://sourceforge.net/projects/gamersproxy/
This is a simple Java program that holds UDP packets for a while before forwarding them to a target address. This can be used to simulate ping in video games.
Eclipse Rich Client Platform application with a new graphical interface to display aggregated turn data from VGAP 4 CVS export data. It will NOT replace the VGAP4 Client application and it is just a complementary user interface.