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

  • Loan management software that makes it easy. Icon
    Loan management software that makes it easy.

    Ideal for lending professionals who are looking for a feature rich loan management system

    Bryt Software is ideal for lending professionals who are looking for a feature rich loan management system that is intuitive and easy to use. We are 100% cloud-based, software as a service. We believe in providing our customers with fair and honest pricing. Our monthly fees are based on your number of users and we have a minimal implementation charge.
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  • Failed Payment Recovery for Subscription Businesses Icon
    Failed Payment Recovery for Subscription Businesses

    For subscription companies searching for a failed payment recovery solution to grow revenue, and retain customers.

    FlexPay’s innovative platform uses multiple technologies to achieve the highest number of retained customers, resulting in reduced involuntary churn, longer life span after recovery, and higher revenue. Leading brands like LegalZoom, Hooked on Phonics, and ClinicSense trust FlexPay to recover failed payments, reduce churn, and increase customer lifetime value.
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  • 1
    MCA Selector

    MCA Selector

    A tool to select chunks from Minecraft worlds for deletion or export

    An external tool to export or delete selected chunks and regions from a world save of Minecraft Java Edition.
    Downloads: 806 This Week
    Last Update:
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  • 2
    PojavLauncher

    PojavLauncher

    A Minecraft Java Edition Launcher for Android and iOS

    A Minecraft Java Edition Launcher for Android and iOS based on Boardwalk. This repository contains source code for the Android platform.
    Downloads: 593 This Week
    Last Update:
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  • 3
    Hello Minecraft! Launcher

    Hello Minecraft! Launcher

    A Minecraft Launcher which is multi-functional, cross-platform

    HMCL is a cross-platform Minecraft launcher that supports Mod Management, Game Customizing, ModLoader Installing (Forge, NeoForge, Fabric, Quilt, LiteLoader, and OptiFine), Modpack Creating, UI Customization, and more. HMCL has amazing cross-platform capabilities. It can not only run on different operating systems such as Windows, Linux, and macOS, but also supports multiple CPU architectures such as x86, ARM, MIPS, and LoongArch. You can easily play Minecraft on different platforms through HMCL.
    Downloads: 453 This Week
    Last Update:
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  • 4
    Roblox anti-AFK

    Roblox anti-AFK

    Never get AFK kicked from Roblox again!

    Never get AFK-kicked again! With Roblox anti-AFK you can easily: grind, farm, chill and whatever you want! It's very easy to use. Just press "Start!", and good luck being AFK! You don't even need to have the Roblox window open. Roblox anti-AFK allows you to AFK in Roblox while you can still use your device. I hope you'll make lots of progress in your favourite simulators! Feel free to add suggestions! =====Version: 2.9.1===== Requires Java to be installed to run. You can download it here if you don't have it already: https://www.java.com/download/manual.jsp If you have trouble opening the program, the first post may help: https://sourceforge.net/p/roblox-anti-afk/tickets/7/?limit=25
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    Downloads: 1,467 This Week
    Last Update:
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  • MicroStation by Bentley Systems is the trusted computer-aided design (CAD) software built specifically for infrastructure design. Icon
    MicroStation by Bentley Systems is the trusted computer-aided design (CAD) software built specifically for infrastructure design.

    Microstation enables architects, engineers, and designers to create precise 2D and 3D drawings that bring complex projects to life.

    MicroStation is the only computer-aided design software for infrastructure design, helping architects and engineers like you bring their vision to life, present their designs to their clients, and deliver their projects to the community.
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  • 5
    Universal Pokemon Randomizer ZX

    Universal Pokemon Randomizer ZX

    Public repository of source code for the Universal Pokemon Randomizer

    Universal Pokemon Randomizer ZX is an open-source tool that allows players to modify and randomize various aspects of Pokémon games across multiple generations, creating unique and unpredictable gameplay experiences. It supports a wide range of ROMs and provides a user-friendly interface for customizing game elements such as Pokémon encounters, abilities, stats, movesets, and item distributions. The tool is designed to maintain game stability while introducing variability, ensuring that randomized versions remain playable and balanced. It also includes advanced options that allow users to control the level of randomness, from subtle changes to complete overhauls of game mechanics. By enabling customization, the project extends the replay value of classic Pokémon titles and encourages experimentation with different strategies. It is widely used by the community for challenge runs, content creation, and personalized gameplay experiences.
    Downloads: 210 This Week
    Last Update:
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  • 6
    Sodium

    Sodium

    A Minecraft mod designed to improve frame rates

    Sodium is a powerful rendering engine and optimization mod for the Minecraft client which improves frame rates and reduces micro-stutter while fixing many graphical issues in Minecraft. A Minecraft mod designed to improve frame rates and reduce micro-stutter.
    Downloads: 167 This Week
    Last Update:
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  • 7
    Arclight

    Arclight

    A Bukkit(1.19/1.20) server implementation in modding environment

    A Bukkit server implementation on common mod loaders.
    Downloads: 84 This Week
    Last Update:
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  • 8
    VulkanMod

    VulkanMod

    Vulkan renderer mod for Minecraft

    This is a fabric mod that introduces a brand new Vulkan-based voxel rendering engine to Minecraft Java in order to both replace the default OpenGL renderer and bring performance improvements.
    Downloads: 80 This Week
    Last Update:
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  • 9
    Lithium (for Fabric)

    Lithium (for Fabric)

    A Fabric mod designed to improve the general performance of Minecraft

    A general-purpose optimization mod for Minecraft, improving server and client performance.
    Downloads: 64 This Week
    Last Update:
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  • Simplify Purchasing For Your Business Icon
    Simplify Purchasing For Your Business

    Manage what you buy and how you buy it with Order.co, so you have control over your time and money spent.

    Simplify every aspect of buying for your business in Order.co. From sourcing products to scaling purchasing across locations to automating your AP and approvals workstreams, Order.co is the platform of choice for growing businesses.
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  • 10
    MCinaBox

    MCinaBox

    A Minecraft: Java Edition Launcher for Android

    A Minecraft Java Edition Launcher on Android. MCinaBox is an open source project with the goal of building and developing a Minecraft Java Edition launcher that runs on an Android. Front End provides User Management, Minecraft Version Management, Minecraft Game Controller, Minecraft Startup Parameter Generation, Configuration Backend, Configuration and Management functions to reduce the workload of complete launcher development.
    Downloads: 59 This Week
    Last Update:
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  • 11
    MotorAssistance

    MotorAssistance

    Aim assistance for blocks and mobs

    AimAssistanceMod is a Minecraft modification that provides aim assistance for interacting with blocks and mobs. It is particularly beneficial for players using controllers or those with disabilities, as it enhances the gameplay experience without offering any advantage in player-versus-player (PvP) scenarios. The mod is fully configurable, allowing users to tailor the assistance to their preferences.
    Downloads: 57 This Week
    Last Update:
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  • 12
    BlueMap

    BlueMap

    A Minecraft mapping tool that creates 3D models of your Minecraft

    BlueMap is a program that reads your Minecraft world files and generates not only a map, but also 3D models of the whole surface. With the web app you then can look at those in your browser and basically view the world as if you were ingame! Or just look at it from far away to get an overview. BlueMap comes as a Spigot/Paper or Sponge Plugin, as a Fabric or Forge-Mod and you can also use BlueMap without any Server from the Command-Line as a standalone tool. If installed as a Plugin/Mod, BlueMap renders asynchronously to your MinecraftServer-Thread. This means at no time it will block your server thread directly. So as long as your CPU is not fully utilized, your server should not be slowed down while BlueMap is rendering.
    Downloads: 48 This Week
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  • 13
    CatServer

    CatServer

    A high performance and high compatibility 1.12.2/1.16.5/1.18.2 version

    CatServer is an open-source hybrid Minecraft server implementation that combines support for both Forge mods and Bukkit-style plugins within the same server environment. Traditional Minecraft server software typically supports either mod loaders such as Forge or plugin systems like Bukkit and Spigot, but CatServer aims to bridge this gap by enabling both ecosystems to coexist. This hybrid approach allows administrators to run modded gameplay features while also using administrative plugins designed for plugin-based servers. The project modifies the server architecture to integrate Forge modding capabilities alongside plugin compatibility layers. As a result, server operators can build more complex environments that include both gameplay modifications and server management tools. CatServer is particularly useful for communities that want the flexibility of modded Minecraft while retaining access to established plugin-based server administration tools.
    Downloads: 39 This Week
    Last Update:
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  • 14
    WorldEdit

    WorldEdit

    Minecraft map editor and mod

    WorldEdit is a powerful open-source Minecraft map editing toolkit that allows players, builders, and server administrators to quickly modify large areas of a Minecraft world directly from within the game. Instead of placing or removing blocks individually, WorldEdit provides commands and tools that enable users to select regions of the world and apply transformations to thousands or even millions of blocks at once. This capability makes it extremely useful for constructing large builds, terraforming terrain, repairing damage, or managing multiplayer server worlds efficiently. The tool includes a variety of editing methods such as brushes, shape generation commands, and clipboard operations that allow copying, pasting, and rotating entire structures. WorldEdit can run in both single-player environments and multiplayer servers and is compatible with several modding platforms and server frameworks used in Minecraft Java Edition.
    Downloads: 31 This Week
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  • 15
    MCreator

    MCreator

    Make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons

    MCreator is an open-source integrated development environment designed to simplify the process of creating Minecraft mods, add-ons, resource packs, and data packs. The software provides a visual programming environment where users can design mod features using graphical tools instead of writing code manually. Through wizards, block-based programming interfaces, and an integrated editor, MCreator generates the underlying Java or JSON code required for the mod automatically. This approach allows beginners and students to experiment with mod development without needing extensive programming experience. At the same time, advanced users can extend the tool through plugins or directly modify the generated code for more complex projects. MCreator is widely used in educational settings, modding communities, and programming workshops as a gateway into game development.
    Downloads: 30 This Week
    Last Update:
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  • 16
    Minecraft X-Ray is a program whose primary purpose is to aid in finding valuable ores and resources inside a Minecraft world. This branch is based on code written by plusminus from the Minecraft forums.
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    Downloads: 766 This Week
    Last Update:
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  • 17
    Mohist 1.20.1

    Mohist 1.20.1

    Minecraft Forge Hybrid server implementing the Spigot

    Tenet is an open-source experimental project related to Minecraft server or modding infrastructure that explores alternative approaches to building scalable and modular gameplay systems. The project aims to provide developers with a framework for experimenting with advanced server architecture and performance-oriented design. By focusing on modular components and extensible design patterns, Tenet allows developers to create systems that can integrate with other Minecraft tools and frameworks. The architecture encourages experimentation with new networking, gameplay logic, or server extension mechanisms. Projects like Tenet often serve as research platforms where developers test new ideas about game server design, concurrency, and plugin systems. The codebase provides a foundation for building new tools or prototypes related to Minecraft infrastructure.
    Downloads: 28 This Week
    Last Update:
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  • 18
    GeyserMC

    GeyserMC

    A bridge/proxy allowing you to connect to Minecraft

    Geyser is an open-source proxy and protocol translation tool that enables cross-platform multiplayer between Minecraft: Java Edition servers and Minecraft: Bedrock Edition clients. The project works by translating network packets between the two different game protocols so that players using Bedrock Edition devices such as consoles, mobile phones, or Windows editions can connect to servers originally designed for Java Edition. By bridging the differences between the two platforms, Geyser allows server communities to unify players who would otherwise be separated by incompatible game editions. The software typically runs as a plugin, proxy, or standalone bridge and integrates with popular Java server platforms such as Spigot, Paper, or Velocity.
    Downloads: 27 This Week
    Last Update:
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  • 19
    BedrockConnect

    BedrockConnect

    Join any Minecraft Bedrock Edition server IP on Xbox One

    On Minecraft Bedrock Edition, players on Xbox One, Nintendo Switch, and PS4/PS5 are limited to playing on 'Featured Servers' approved by Mojang/Microsoft. These players are not able to join servers via an IP/address. This is an issue for me and others, as the server community on Java edition was one of the major parts that made Minecraft what it was, and what also made the servers that are now considered 'Mojang Server Partners' what they are today. I wanted to fix this, so I made a solution that anyone can set up easily.
    Downloads: 25 This Week
    Last Update:
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  • 20
    DragonProxy

    DragonProxy

    A proxy to allow Minecraft: Bedrock clients to connect to Minecraft

    A proxy made to allow Minecraft: Bedrock Edition clients to connect to Minecraft: Java Edition servers.
    Downloads: 25 This Week
    Last Update:
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  • 21
    ViaVersion

    ViaVersion

    Allows the connection of newer clients to older server versions

    Allows the connection of higher client versions to lower server versions - it works on any platform you can think of. The base ViaVersion jar runs on Paper and Velocity. We also have projects integrating ViaVersion to run on Fabric, Forge, Bungee, Sponge, or as a standalone proxy to join from basically any client version on any server version from the past decade. See HERE for an overview of the different Via* projects. Note that ViaVersion will be able to run best on either Paper servers or through ViaFabricPlus due to having direct access to client/server state and more extensive API.
    Downloads: 22 This Week
    Last Update:
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  • 22
    Iris

    Iris

    A modern shaders mod for Minecraft compatible with existing OptiFine

    Iris was created to fill a void that I saw in the Minecraft customization and graphical enhancement community: the lack of an open-source shaders mod that would let me load my favorite shader packs on modern versions of the game, while retaining performance and compatibility with modpacks. OptiFine, the current dominant mod for loading shader packs, has restrictive licensing that firmly stands in the way of any sort of tinkering, and is fairly notorious for having compatibility issues with the mods that I like. It's also mutually incompatible with Sodium, the best rendering optimization mod in existence by a large margin. ShadersMod was never updated past 1.12, and it lacks support for many of the many modern popular shaderpacks. So I created Iris, to try and solve these issues, and also address many other longstanding issues with shader packs. I first and foremost develop Iris to meet my own needs of a performance-oriented shaders mod with good compatibility.
    Downloads: 16 This Week
    Last Update:
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  • 23
    minecraft-world-downloader

    minecraft-world-downloader

    Download Minecraft worlds, extend server's render distance. 1.12.2

    A Minecraft world downloader that works as a proxy server between the client and the server to read & save chunk data. Download multiplayer worlds by connecting to them and walking around. Chunks can be sent back to the client to extend the render distance.
    Downloads: 16 This Week
    Last Update:
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  • 24
    This is a mod to minecraft aimed at providing advanced building capabilities to the game.
    Downloads: 58 This Week
    Last Update:
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  • 25
    NeoForge

    NeoForge

    Neo Modding API for Minecraft: Java Edition, based on Forge

    NeoForge is an open-source modding API and mod loader designed for Minecraft: Java Edition that enables developers to create and run game modifications within a structured development framework. The project was created as a community-driven continuation of the Minecraft Forge ecosystem and aims to provide a modernized, actively maintained platform for mod development. NeoForge includes tools, APIs, and build systems that allow developers to modify game behavior, add new gameplay mechanics, and integrate custom content into Minecraft worlds. The framework is designed to simplify the development process by offering standardized interfaces, development kits, and compatibility layers that help mod creators build complex modifications without rewriting core game code. By supporting mod development tools such as Gradle plugins and mod development kits, NeoForge allows programmers to efficiently build, compile, and distribute mods for multiple versions of Minecraft.
    Downloads: 12 This Week
    Last Update:
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