Open Source Java Minecraft Mods
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Java Minecraft Mods
View related business solutionsBrowse 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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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. -
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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. -
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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. -
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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. -
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5
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. -
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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. -
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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. -
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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. -
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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. -
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10
Arclight
A Bukkit(1.19/1.20) server implementation in modding environment
A Bukkit server implementation on common mod loaders. -
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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. -
12
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. -
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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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14
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. -
15
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. -
16
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. -
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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. -
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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. -
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NostalgiaLauncher
Minecraft PE Alpha versions launcher for Windows and Linux
Minecraft PE Alpha versions launcher for Windows and Linux -
21
Skript
Skript is a Bukkit plugin which allows server admins
Skript is (surprise, surprise) a scripting plugin for the Bukkit platform. It is easy to use for simple tasks, but you can also create really complex things with it. The syntax of Skript is close to English, but it is still not magic. While you might succeed with experimentation for simple tasks, for anything more complex you will need some guidance. You will find all supported features of the plugin here, along with some useful examples. We don't have tutorials yet, but you can find good ones using whatever search engine you prefer. Skript requires Spigot to work. You heard it right, CraftBukkit does not work. Paper, which is a fork of Spigot, is recommended; it is required for some parts of Skript to be available. Skript supports only the latest patch versions of Minecraft 1.9+. For example, this means that 1.16.5 is supported, but 1.16.4 is not. Testing with all old patch versions is not feasible for us. -
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Slimefun 4
A unique Spigot/Paper plugin that looks and feels like a modpack
A Minecraft plugin adds hundreds of new features, such as advanced machines and magic, to enhance vanilla gameplay. -
23
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. -
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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. -
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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.
