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

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  • 1
    FarPlaneTwo

    FarPlaneTwo

    Level-of-Detail renderer in Minecraft. Allows for render distances

    FarPlaneTwo is an experimental open-source Minecraft mod that introduces a Level-of-Detail (LoD) terrain rendering system designed to dramatically extend how far players can visually see across the game world. Instead of rendering distant terrain using the same detailed chunk system as nearby areas, the mod generates simplified representations of terrain that require far fewer resources to display. This approach allows players to view landscapes at extremely large distances while maintaining acceptable performance levels. The project aims to support render distances far beyond the limits of the standard Minecraft engine, potentially reaching hundreds of thousands or even millions of blocks. By creating progressively lower-detail versions of terrain farther from the player, the mod can display the shape and structure of distant regions without fully loading those chunks.
    Downloads: 8 This Week
    Last Update:
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  • 2
    GrimAC

    GrimAC

    Fully async, multithreaded, predictive, open source, 3.01 reach

    GrimAC is an open-source anticheat system designed to detect and prevent cheating on Minecraft multiplayer servers through predictive simulation and advanced movement analysis. The project uses a simulation-based detection engine that recreates player movement and physics in order to identify discrepancies between legitimate gameplay and modified client behavior. By analyzing how players move, interact with the world, and send network packets to the server, Grim can detect a variety of cheats such as reach hacks, speed hacks, and anti-knockback modifications. The software is designed to operate asynchronously and with multithreaded processing, allowing servers to maintain high performance even when monitoring large numbers of players simultaneously. Grim supports a wide range of Minecraft versions and can integrate with server platforms used in competitive or large multiplayer environments.
    Downloads: 8 This Week
    Last Update:
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  • 3
    Nukkit

    Nukkit

    Nuclear-Powered Minecraft: Bedrock Edition Server Software

    Nukkit is nuclear-powered server software for Minecraft: Pocket Edition. It has a few key advantages over other server software.
    Downloads: 6 This Week
    Last Update:
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  • 4
    Purpur

    Purpur

    Purpur is a drop-in replacement for Paper servers

    Purpur is an open-source Minecraft server software built as a fork of the Paper server platform, designed to provide extensive configurability and gameplay customization for server administrators. It functions as a drop-in replacement for Paper, meaning existing servers can switch to Purpur without major changes while gaining access to additional features and configuration options. The project focuses on allowing administrators to modify gameplay mechanics, behaviors, and rules that are normally fixed in standard server implementations. Through a wide set of configuration settings, server operators can adjust how mobs behave, alter game mechanics, or enable experimental gameplay features that are not present in vanilla Minecraft. Purpur inherits performance improvements and plugin compatibility from the Paper ecosystem while adding its own enhancements and customization capabilities.
    Downloads: 6 This Week
    Last Update:
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  • 5
    Phosphor (for Fabric)

    Phosphor (for Fabric)

    A Fabric mod designed to improve the performance of Minecraft

    Phosphor is a free and open-source Minecraft mod (under GNU GPLv3) aiming to save your CPU cycles and improve performance by optimizing one of Minecraft's most inefficient areas-- the lighting engine. It works on both the client and server and can be installed on servers without requiring clients to also have the mod. The mod is designed to be as minimal as possible in the changes it makes, and as such, does not modify the light model or interfaces of vanilla Minecraft. Because of this, Phosphor should be compatible with many Minecraft mods (so long as they do not make drastic changes to how the lighting engine works.) If you've ran into a compatibility problem, please open an issue.
    Downloads: 5 This Week
    Last Update:
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  • 6
    Starlight Fabric

    Starlight Fabric

    Rewrites the light engine to fix lighting performance

    Starlight is a performance optimization project for Minecraft that completely rewrites the game’s internal lighting engine to improve efficiency and reduce lighting-related lag. The original Minecraft lighting system can be computationally expensive when generating terrain or updating large structures, which can cause performance problems on servers and heavily modded environments. Starlight replaces this system with a redesigned algorithm that processes lighting calculations more efficiently and reduces the number of updates required for each chunk. The project aims to improve chunk generation performance, reduce lag spikes, and eliminate certain lighting bugs that occur in the vanilla engine. Because it fundamentally replaces the default lighting system, Starlight can significantly improve performance on servers handling large numbers of block updates or terrain generation tasks.
    Downloads: 5 This Week
    Last Update:
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  • 7
    Create

    Create

    Building Tools and Aesthetic Technology

    Create is a large Minecraft modification that introduces mechanical engineering systems, automation tools, and kinetic machinery into the game. The mod focuses on building complex contraptions powered by rotational energy rather than relying on traditional redstone circuitry alone. Players can design elaborate machines using components such as shafts, gears, belts, and mechanical devices that interact with each other to automate crafting, farming, and resource processing. Unlike many technology mods that rely heavily on graphical interfaces, Create emphasizes visible mechanical movement and physical machinery that operates directly in the game world. The mod also includes a visual documentation system called “Ponder” that demonstrates how each machine or component works through animated tutorials inside the game.
    Downloads: 4 This Week
    Last Update:
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  • 8
    DiscordSRV

    DiscordSRV

    Discord bridging plugin for block game

    A plugin that links Minecraft servers to Discord channels, providing chat synchronization and notifications between both platforms.
    Downloads: 4 This Week
    Last Update:
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  • 9
    Mohist

    Mohist

    Minecraft Forge Hybrid server implementing the Spigot/Bukkit API

    MohistMC is dedicated to pushing boundaries by accomplishing the impossible through the creation of unique hybrid Minecraft software. Additionally, we strive to maintain and enhance select mods and plugins, aiming to provide players with an exceptional gaming experience.
    Downloads: 3 This Week
    Last Update:
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  • 10
    Botania

    Botania

    A tech mod for Minecraft themed around the magic of nature

    Botania is a Minecraft tech mod themed around natural magic. It's inspired by other magic mods, such as Thaumcraft or Blood Magic. With an original aim- and timing-based power system, Botania has a very different feel from your typical magic or tech mod. Manipulating Mana and watching it flow in real time adds a new light to your base of operations. Botania works within the Minecraft world itself; no GUIs are used to interact with any of its features. It's carefully designed to ensure that nearly everything is fully automatable using vanilla and itself. After some thought, of course. The Lexica Botania is the compendium of nearly all knowledge about this mod. Easily craftable in-game using a book and a sapling, it gives you almost all the information you'll ever need to know about Botania.
    Downloads: 2 This Week
    Last Update:
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  • 11
    SpongeForge

    SpongeForge

    A Forge mod that implements SpongeAPI

    A Forge implementation of the Sponge API. SpongeForge uses Gradle as its build system. The repo includes the Gradle wrapper that will automatically download the correct Gradle version. Local installations of Gradle may work but are untested. To execute the Gradle wrapper, run the ./gradlew script on Unix systems or only gradlew on Windows systems. In order to build SpongeForge you simply need to run the gradlew command. On Windows systems you should run gradlew instead of ./gradlew to invoke the Gradle wrapper. SpongeForge is the implementation of the Sponge API on the Minecraft Forge platform. Recommended for running plugins together with Forge mods. The purpose of the Sponge project is to create a plugin development framework for Minecraft: Java Edition. Sponge is being created by a global community, and its open-source nature means anyone can participate.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 12
    DynamicClient (Minecraft)

    DynamicClient (Minecraft)

    A Hack Client created from curseforge creators since 2021

    Dynamic Client is a minecraft hacked client that improve's the experience of the player, It has mods that was used for testing anti-cheats of servers but we changed it to be hacked client because making a client just to test anti-cheats is Boring. Announcement: 1.9.11 has been released! NOTE: This requires you to have a Minecraft launcher such as TLauncher to use the hack client. it also shows how anyone can create their own client, without coding as you only need ac-credit the mod creators. Having Issues? Check the installation Guide > https://sites.google.com/view/dynamic-client/about/installation?authuser=0 Website > https://sites.google.com/view/dynamic-client Github > https://github.com/JamStudios/DynamicClient Gitlab > https://gitlab.com/JamStudiosCorp/dynamicclient/DynamicClient
    Downloads: 45 This Week
    Last Update:
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  • 13
    jfCraft

    jfCraft

    jfCraft : Yet Another Minecraft Clone

    jfCraft is Yet Another Minecraft Clone built with the JavaForce library. Built from the ground up to look like the real thing. Uses the Faithful texture pack. Complex blocks and entities are loaded from Blender files. Now includes a built-in VoIP conference like TeamSpeak. This game is incomplete for now. The plan is to recreate the game in full and then go way beyond with plugins to create much more.
    Downloads: 43 This Week
    Last Update:
    See Project
  • 14

    yogpstop Minecraft Mods

    My minecraft mods development base

    yogpstop's minecraft(bukkit) mods is release in here. I'm japanese. Blog is maybe Japanese. And I'm not well at English. Please be advised. But you can post to discussion and tickets at English. Of course, reply written in English. And it isn't machine translation.
    Downloads: 22 This Week
    Last Update:
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  • 15
    ImmersiveEngineering

    ImmersiveEngineering

    Wires, transformers, high voltage

    A Minecraft mod that introduces a range of machines and tools inspired by industrial technology.
    Downloads: 1 This Week
    Last Update:
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  • 16
    Luck Perms

    Luck Perms

    A permissions plugin for Minecraft servers

    LuckPerms is a widely used open-source permissions management plugin for Minecraft servers that allows administrators to control what actions players can perform within the game. The plugin provides a flexible system for creating user groups, assigning permissions, and defining roles that determine access to commands, features, and gameplay mechanics. Designed for performance and scalability, LuckPerms can handle large multiplayer servers and complex permission hierarchies while maintaining fast response times. Administrators can configure permissions using command-line tools, configuration files, or a web-based editor that simplifies management of large permission systems. The plugin also supports multiple storage backends such as local files, SQL databases, and other data systems, allowing server networks to synchronize permissions across multiple servers.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    MinecraftForge

    MinecraftForge

    Modifications to the Minecraft base files to assist in compatibility

    MinecraftForge is a widely used open-source modding API and development platform for Minecraft that enables developers to create, install, and manage game modifications in a standardized way. It provides a framework that extends the core functionality of Minecraft while maintaining compatibility between different mods and versions of the game. Forge simplifies the modding process by offering tools, hooks, and APIs that allow developers to modify game behavior without directly altering the base game code. This modular approach allows multiple mods to coexist within the same installation while minimizing conflicts. MinecraftForge also includes tools for loading mods, managing dependencies, and maintaining compatibility across game updates. Over time it has become the primary modding ecosystem for Minecraft Java Edition, supporting thousands of community-created modifications ranging from gameplay enhancements to entirely new game mechanics.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 18
    Project Malmo

    Project Malmo

    A platform for Artificial Intelligence experimentation on Minecraft

    How can we develop artificial intelligence that learns to make sense of complex environments? That learns from others, including humans, how to interact with the world? That learns transferable skills throughout its existence, and applies them to solve new, challenging problems? Project Malmo sets out to address these core research challenges, addressing them by integrating (deep) reinforcement learning, cognitive science, and many ideas from artificial intelligence. The Malmo platform is a sophisticated AI experimentation platform built on top of Minecraft, and designed to support fundamental research in artificial intelligence. The Project Malmo platform consists of a mod for the Java version, and code that helps artificial intelligence agents sense and act within the Minecraft environment. The two components can run on Windows, Linux, or Mac OS, and researchers can program their agents in any programming language they’re comfortable with.
    Downloads: 1 This Week
    Last Update:
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  • 19
    Tweaked

    Tweaked

    Just another ComputerCraft fork

    Tweaked is a mod for Minecraft that adds programmable computers, turtles and more to the game. A fork of the much-beloved ComputerCraft, it continues its legacy with improved performance and stability, along with a wealth of new features. Tweaked can be installed from CurseForge or Modrinth. It runs on both Minecraft Forge and Fabric.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    Minecraft (Linux)

    Minecraft (Linux)

    Minecraft launcher

    Downloads: 20 This Week
    Last Update:
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  • 21

    Thermos

    MinecraftForge Server Software implementing the Spigot/Bukkit API

    Minecraft Forge Server Software implementing the Spigot/Bukkit API, formerly known as Cauldron/MCPC.
    Downloads: 18 This Week
    Last Update:
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  • 22
    JavaForce

    JavaForce

    Java Development Framework

    JavaForce (JF) is a Java library extending the capabilities of Java. It includes a VoIP stack and native bindings for FFMPEG, OpenGL, and Camera (Windows, Linux and Mac). Includes many apps such as jfPhone, jfPBX, jfPaint, jfVideo Creator, etc. JF is the core of the Java/Linux Operating System : jfLinux.sf.net JF is also used to create another Minecraft clone : jfcraft.sf.net Moved to github.com/pquiring/javaforce
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    Downloads: 14 This Week
    Last Update:
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  • 23
    Minecraft Portable

    Minecraft Portable

    Portable Minecraft launcher for macOS

    A portable Minecraft launcher for macOS. This is the legacy Java-based Minecraft launcher. Minecraft, and the Minecraft Logo are trademarks of Mojang AB. http://mojang.com/, http://minecraft.net/
    Downloads: 12 This Week
    Last Update:
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  • 24
    Minecraft by zyczu

    Minecraft by zyczu

    Minecraft launcher

    Downloads: 10 This Week
    Last Update:
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  • 25
    mod_MumbleLink

    mod_MumbleLink

    Positional Audio Communication for Minecraft with Mumble

    A Mod so that Minecraft now natively supports Mumble's positional audio feature. This means: Directional and positionally attenuated VOIP in relation to the game world. Please visit the Forum for information about the newest Version! Main Forum-Thread: http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1272675 TheSkorm's Fork on GitHub: https://github.com/TheSkorm/mod_mumblelink Mumble: http://mumble.sourceforge.net Donations are greatly appreciated: https://sourceforge.net/donate/?user_id=2370023
    Downloads: 2 This Week
    Last Update:
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