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

  • Context for your AI agents Icon
    Context for your AI agents

    Crawl websites, sync to vector databases, and power RAG applications. Pre-built integrations for LLM pipelines and AI assistants.

    Build data pipelines that feed your AI models and agents without managing infrastructure. Crawl any website, transform content, and push directly to your preferred vector store. Use 10,000+ tools for RAG applications, AI assistants, and real-time knowledge bases. Monitor site changes, trigger workflows on new data, and keep your AIs fed with fresh, structured information. Cloud-native, API-first, and free to start until you need to scale.
    Try for free
  • FusionAuth: Authentication and User Management Software Icon
    FusionAuth: Authentication and User Management Software

    Offer your users flexible authentication options, including passwords, passwordless, single sign-on (SSO), and multi-factor authentication (MFA).

    FusionAuth adds login, registration, SSO, MFA, and a bazillion other features to your app in days - not months.
    Learn More
  • 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: 99 This Week
    Last Update:
    See Project
  • 2
    Crystal Space 3D SDK
    Crystal Space is an Open Source 3D SDK for Unix, Windows, and MacOS/X. It renders with OpenGL and features GLSL shaders, CG shaders, deferred rendering, dynamic shadows, bullet based physics library, terrain engine, skeleton based animation meshes, exporter for Blender, portals, etc...
    Downloads: 10 This Week
    Last Update:
    See Project
  • 3
    A Java framework for writing sprite based games (turn-based, card, and arcade games.) Provides: Sprite management, rendering (Java2d or OpenGL), Collision Detection, Sprite widgets (buttons etc...), visual editor for layout of game widgets.
    Downloads: 2 This Week
    Last Update:
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  • 4
    AjaxRPG is a Joomla component for the development of web-based RPG. Il includes a Java client to be more immersive. AjaxRPG is now Joomla 1.5 native.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Trumba is an All-in-one Calendar Management and Event Registration platform Icon
    Trumba is an All-in-one Calendar Management and Event Registration platform

    Great for live, virtual and hybrid events

    Publish, promote and track your events more affordably and effectively—all in one place.
    Learn More
  • 5
    Magic Lantern

    Magic Lantern

    Build Cross-platform Applications

    Magic Lantern is a framework for developing multimedia applications. It is designed to be a cross-platform solution for multiple targets such as desktops, game consoles, mobile devices and set-top boxes.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 6
    This is a framework to develop Contexts and Agents and a Container to run them. The Container lets each Agent interact with the Context and other Agents. The agents are deployed in jar files and each one runs in an exclusive sandbox.
    Downloads: 0 This Week
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    See Project
  • 7
    Abstract Laboratory for Education & Science – 6 Java frameworks for rapid development of GUI applications/applets. Includes plots, unified access to Swing components and super-rapid development of “labs" (typical educational/research applications)
    Downloads: 0 This Week
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    See Project
  • 8
    AOLibrary is a java-based library for writing chat bots that can be used with the game Anarchy Online. (Bots are often used to facilitate communications within an in-game organization or guild.) The library is written in Java 6.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    The Areath project aims to create an easily reusable framework for putting together modernized (but still pleasingly retro) text-based games. Legends of Areath is a full game built using the framework.
    Downloads: 0 This Week
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  • AI-based, Comprehensive Service Management for Businesses and IT Providers Icon
    AI-based, Comprehensive Service Management for Businesses and IT Providers

    Modular solutions for change management, asset management and more

    ChangeGear provides IT staff with the functions required to manage everything from ticketing to incident, change and asset management and more. ChangeGear includes a virtual agent, self-service portals and AI-based features to support analyst and end user productivity.
    Learn More
  • 10
    CardShark is a software package that includes a utility for creating and organizing playing cards and an interactive environment for playing games with those cards via the internet.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Cherokee is a fully extensible and scriptable automation engine for any and all java applets. To make it work for your favorite java applet the most you have to do is write is two classes.
    Downloads: 0 This Week
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    See Project
  • 12
    This project is an extended implementation of Knuth's "Dancing Links" algorithm and some use cases (e.g. Sudoku).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    DominoBot

    DominoBot

    An IRC bot project case study.

    DominoBot is a project for a simple IRC framework. It is currently a simple yet functional Domino game bot for IRC. It currently allows arbitrary piece (stones) numbers and multi session support. The game states are broadcast to the lobby. Uses colors to identify the player who layed each stone. It is a case study to create a framework for quick development of turn-based sessions, such as games, voting, meeting and etc. Uses PircBotX (redistributed - you do not need to download it). Pure J2SE. Java 6.0 compliant. GPL v3 license.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Project Elemental Shattering (ES) is a role-playing game that has been in the design phase for many years. Its first incarnation is this MUD engine. A successful MUD project will lead to the inevitable graphical MMORPG!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    This was once an engine targeted at online games. It has been succeeded by another project with the same goal: http://io-project.org
    Downloads: 0 This Week
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    See Project
  • 16
    Enthusiasm is a software framework to be implemented in support to the creation and production of drama-based information presentations. The framework consists of off-line editors and real-time applications.
    Downloads: 0 This Week
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    See Project
  • 17
    Evver Games is an open source project that contains an AJAX web renderer and framework for creating card games; along with the card games Golf and No Peeking.
    Downloads: 0 This Week
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    See Project
  • 18
    A platform which hosts battles between Fruit War robots - special java programs. The platform accepts source code as robot, and ranks all robots according to battle result. This project has been totally refined and is now hosted at http://robotypo.appspot.com
    Downloads: 0 This Week
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    See Project
  • 19
    btp2p stands for Bluetooth p2p and it is a collection of java classes for p2p networks over Bluetooth. Useful for CLDC multiplayer games and other applications with extendable design for layered protocols. HuNt is a chatroom midlet based on btp2p.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Io is a project in development. It aims to be a backend for all kinds of online games, relieving game developers from the task of writing the technical infrastructure needed to support such games.
    Downloads: 0 This Week
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    See Project
  • 21
    Java middleware/engine to make the creation of 2D games easy and fun.
    Downloads: 0 This Week
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    See Project
  • 22
    Jepe is an Pokémon Game engine. We have been working on pokémon fan games for quite a while now, but found no easy framework to program them. Therefore we are making this engine.
    Downloads: 0 This Week
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    See Project
  • 23
    A comprehensive, high performance framework for accelerating development of games and other rich multimedia applications in Java.
    Downloads: 0 This Week
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    See Project
  • 24
    This software allows a MUD server to be run as a Jabber bot. Users can then play the MUD using their Jabber client instead of a MUD client or telnet. This relieves the MUD server from having to handle user chat as users can chat in Jabber instead.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Java Weapon Script Engine is a Java library for implementing dynamic weapons. Weapons are specified and parsed from script files. The goal of the project is to be able to generate any kind of weapon and behavior.
    Downloads: 0 This Week
    Last Update:
    See Project
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