Browse free open source Java Game Servers and projects below. Use the toggles on the left to filter open source Java Game Servers by OS, license, language, programming language, and project status.

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  • 1
    Arianne RPG

    Arianne RPG

    Arianne is an engine to develop multiplayer online games like Stendhal

    Arianne is a multiplayer online engine to develop turn based and real time games, providing a simple way of creating the game server rules and clients like our MORPG Stendhal. Our engine Marauroa uses Java and SQL for hosting hundreds of players on a solo host. Stendhal is a fun friendly and free multiplayer online adventure game with a huge and rich world. With hundreds of NPCs and different quests, features like the Travel log and achievement system keep track of progress. Thousands of creatures are ready to fight, above and below ground, and as players level up they can compare themselves on a detailed stats website. The engine Marauroa provides a simple way of creating games on a portable and robust server architecture. Marauroa manages the client server communication and provides an object orientated view of the world for game developers. It handles database access in a transparent way to store player accounts, character progress and the state of the world
    Downloads: 91 This Week
    Last Update:
    See Project
  • 2
    NettyGameServer

    NettyGameServer

    A mobile game distributed server implemented using netty4.X

    A mobile game distributed server implemented using netty4.X, supports tcp, udp, http, websocket links, uses protobuf custom protocol stack for network communication, supports rpc remote calls, uses mybatis3 to support db storage sub-database sub-table, supports asynchronous mysql Storage, update the reids cache synchronously when the db is saved. Use the ExcelToCode project to generate java classes and json data dictionaries from excel data, and DictService directly reads json to reduce part of the data dictionary code. Use the game-executor project to increase the asynchronous event global service in the game, support event sharding, and balance asynchronous execution event logic. Use netty's proxy mode to increase gateway proxy forwarding.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 3
    Alternative Lineage 2 Game Server written in Java.
    Downloads: 45 This Week
    Last Update:
    See Project
  • 4
    Shoddy Battle (later known as Pokémon Lab) is a Pokémon simulator created by Cathy and bearzly and first released in July 2007. It allows users to play Pokémon matches against other people online. Shoddy Battle was highly influential on the game of competitive Pokémon because it was free and open source, scalable (700,000 battles per month during its peak), user customisable and extensible, and it provided unprecedented statistical data on player skill and Pokémon usage trends. Visit the web site for more information.
    Downloads: 11 This Week
    Last Update:
    See Project
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  • 5
    A simple Java console application which connects to Call of Duty game server by RCON protocol.
    Downloads: 1 This Week
    Last Update:
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  • 6
    The goal of the project is to create a Java multi-user game server that can be easily extended and used for adding a multiplayer feature to games. User authentication, chat and interfaces for adding custom capabilities will be provided out of the box.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7
    All-Knowing Mind is a Java/SWT multi-language, OS-independent game server browser focusing on first person shooters similar to Yahoo's now defunct All-Seeing Eye.
    Downloads: 0 This Week
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  • 8
    Android RTS is a Real-Time-Strategy MMO using google maps. The game server is implemented in python and the client in java for the Android phone.
    Downloads: 0 This Week
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  • 9
    Apple Game Server 3.1

    Apple Game Server 3.1

    Upload games to legacy apple // computers via serial and no floppies!

    This java (version 6 or higher) program allows you to send games directly to an old apple // computer with no need for floppies, only a serial cable. No hardware modification is necessary, you only need a working serial connection. A cousin of this project can be found here: http://asciiexpress.net/gameserver/ (Thanks Egan!)
    Downloads: 0 This Week
    Last Update:
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  • Connect with customers in one app Icon
    Connect with customers in one app

    Businesses of all sizes seeking an AI-enhanced, all-in-one communication platform to unify voice, video, and messaging for improved team collaboration

    Dialpad Connect is an AI-powered unified communications platform that combines voice, video, and messaging to enhance team collaboration and customer interactions. It features real-time call transcription, automated call summaries, and AI-generated action items to help users stay focused during conversations. The platform integrates seamlessly with popular business apps like Salesforce, Zendesk, Microsoft Teams, and Google Workspace to streamline workflows. Designed for businesses of all sizes, Dialpad Connect delivers enterprise-grade reliability with 100% uptime SLA and robust disaster recovery. Security and privacy are core priorities, meeting standards like GDPR, HIPAA, and SOC 2 compliance. Dialpad Connect helps companies elevate customer experiences while boosting team productivity.
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  • 10
    THIS PROJECT IS NO LONGER ACTIVE, AND HAS NOT BEEN FOR MANY YEARS. Old: A website application for game clans with sophisticated news system, member management, tagwall, ladder info, game server status, live IRC stats, integration with opensource IRC bot and login system for members.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    FIGS, open and fun! GPL/java game server for many games, and a graphical client. Server works for 16/19 chess variants,adding go, rating system, and haskell AI client soon.
    Downloads: 0 This Week
    Last Update:
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  • 12
    Jao is a framework, game server and set of Java clients for developing and playing card games. Support for trick taking games like Hearts, continuous play games like Crazy Eights, and partial support for mutable games like Mao is envisioned.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Knapper is a Gaming Platform based on the Eclipse RCP. It provides Master/Game Server interfaces and communication protocol implementations. Furthermore it offers a GUI containing Lobby, Chat Rooms, Master Server capability and a User Management System.
    Downloads: 0 This Week
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  • 14
    MMOWGLI

    MMOWGLI

    Massive Multiplayer Online Wargame Leveraging the Internet

    MMOWGLI, the Massive Multiplayer Online Wargame Leveraging the Internet, enables collaborative thinking and innovation. Players build Ideas and Action Plans together on the Web. Play the game, change the game! MMOWGLI is a message-based game to encourage innovative thinking and collaboration by many people, connected via the Web. It has been used to study a number of topics... starting in 2021 and beyond. Years of funded support by Office of Naval Research (ONR) and more than a dozen additional sponsors has produced a robust tool that can be applied to many different group challenges.
    Downloads: 0 This Week
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  • 15
    Opensource Community-Driven MMORPG
    Downloads: 0 This Week
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  • 16
    This library is a general purpose library for Java programs that use the Open Game Cache (OGC). Information about the Open Game Cache can be found at http://opengamecache.sourceforge.net/ Keywords: master server game server
    Downloads: 0 This Week
    Last Update:
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  • 17
    POTG Games is a parent project for a number of items originally part of a commercial venture. This includes * SuDoku for J2ME * Board games for J2ME * J2ME Game downloader * Multiplayer game server
    Downloads: 0 This Week
    Last Update:
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  • 18
    Rising Heroes is a card-based game server that allows players to use and trade cards in order to collect resources, develop skills, fight in battles and defeat their opponents through games organized in tournaments.
    Downloads: 0 This Week
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  • 19

    Romance MMO Game Development Framework

    Massively multiplayer online game server and client framework

    MMO-RPG-type game server system. Romance 1.1 provides functional server, client communications system, and beginnings of relevant client libraries for Java, JavaScript, and Android devices. Romance 2 (a very early draft at present) provides a non-functional (yet) effort to produce a server, HTML5-based client, and support and infrastructural tools for MMO development. The new server is designed for greater scalability, and integrates real 3D support (not 2D + some depth, as in Romance 1.1) and server-side Bullet physics, as well as extremely powerful AI development utilities for logical agent characters. The server is mostly in Common Lisp, the client in Parenscript/JavaScript, and some tools are in Perl and Emacs Lisp.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    MUS is a cards game with 4 players around a table. It is a spanish (basque) game. Easy to learn to play but hard to master. Important to decoy opponents. SUMUS is a server for such a game. Clients are also provided or in development.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    A web interface for reading the stats recorded by a Scorched3d game server. Written in Java and designed for Apache Tomcat.
    Downloads: 0 This Week
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  • 22
    Scribblings
    A suite of four inter-related projects written in Java: Cervantes Game Server. PostModernGames Client. Catcher and Gravity.
    Downloads: 0 This Week
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  • 23
    Trading Agent Competition (TAC) is an international forum designed to promote and encourage high quality research into the trading agent problem. The TAC SCM open-source software consists of a Java-based Game Server and and library for developing agents.
    Downloads: 0 This Week
    Last Update:
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  • 24
    Simple Tic Tac Toe game. Allows multiplayer on one computer, mutiplayer between computers with communication through included game server. Also has single player mode where you can play against computer.
    Downloads: 0 This Week
    Last Update:
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  • 25
    The internet WeiQi (Go) game server witten completely in Java. The goal of this project is to provide a full feature game server with an internet player ranking database for all the WeiQi fans.
    Downloads: 0 This Week
    Last Update:
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