Minecraft Java Scripting Engines

README.md

This is a list of every Minecraft scripting engine I could find. Please correct any information you see that's wrong.

I mention "no mixins" in some places, none of them support mixins but it can somewhat be done through ByteBuddy.

Date's last updated 10/2025

• JSMacros (JS/Python 2.7/Python 3.x/Lua 5.2/Ruby 2.6.x/Groovy 4.0.4/Kotlin 1.7.10/WASM)
  • Engine: GraalJS primarily
  • Latest Release: 1.21.4 (Experimantal, found in discord), or 1.21.1 officially (Last commit April 2025)
  • Platform: Fabric + Forge, Client only
  • Functionality: Java interop, no mixins, lots of APIs
  • Additional Notes: Frequently forks for the latest version, stability/feature parity frequently lacking
• JSCore (JS)
  • Engine: Rhino currently. However, the dev is moving towards switching to Graal but is waiting until a bug in Graal is resolved (I personally speculate it will not be resolved for a very long time)
  • Latest Release: 1.21.8 (Last commit 3 months ago)
  • Functionality: Java interop, no mixins
  • Platform: Fabric, Client only
• Moud (JS/TS)
  • Engine: GraalJS with an abstraction layer for typescript support. The typescript support is not done through tsc and is instead type-stripping similar to node.js' --experimental-strip-types flag
  • Latest Release: 1.21.1 (Last commit 3 weeks ago)
  • Functionality: "HTML/CSS-like UI elements" (A better description is "flex-box inspired"), very focused on creating something client+server it seems
  • Platform: Fabric + Custom Server (Using Minestom),
  • Additional Notes: Client+Server data sync for scripts (eg. events between them)
• KubeJS (JS)
  • Engine: Rhino Fork
  • Latest Release: 1.21.x(?) (Last commit 15 hours ago)
  • Functionality: Java integration, Intended for modpacks/servers
  • Platform: Forge+Fabric, Client+Server
• ChatTriggers (JS)
  • Engine: Rhino
  • Latest Release: 1.8.9 & 1.12.2 (Last commit July 2024)
  • Functionality: Java integration, Fairly mature ecosystem
  • Platform: Forge, Client only
• ScriptCraft (JS)
  • Engine: Nashorn
  • Latest Release: Somewhere around 1.15.2 (Last commit February 2020)
  • Functionality: Focuses on Spigot and CanaryMod API access (doesn’t expose the entire JVM by default)
  • Platform: Bukkit Plugin, Server only
• MagikCraft (JS)
  • Engine: Nashorn
  • Latest Release: Somewhere around 1.15.2? (Last commit December 2021)
  • Functionality: Focuses on Spigot and CanaryMod API access (doesn’t expose the entire JVM by default), npm support, polyfills, unit testing, docker?
  • Platform: Bukkit Plugin, Server only
  • Additional Notes: ScriptCraft fork
• JMod (JS)
  • Engine: Nashorn
  • Latest Release: 1.7.10 (Last commit October 2017)
  • Functionality: No events(?), Intended for internal use within the owner's modpack.
  • Platform: Forge, Client only(?)
• CraftTweaker (ZenScript, they aren't consistent and also call this ZenCode???, it's C#-like ish)
  • Engine: Custom I assume
  • Latest Release: 1.21.1 (Last commit 2 months ago)
  • Functionality: Diverse api, no java interop, Primarily for modpack glue
  • Platform: Forge + Fabric + Neoforge, Client + Server required(confirm?)
• GroovyScript (Groovy lang, Java-like)
  • Engine: Groovy
  • Latest Release: 1.12.2 (Last commit 5 days ago)
  • Functionality: Static compilation, dynamic typing, Sandboxed Java interop, Events, CraftTweaker support
  • Platform: Forge, Client only(?)
• AdvancedMacros (Lua)
  • Engine: Luaj (Lua 5.2)
  • Latest Release: 1.15.2? 1.20.x? (Last commit May 2024)
  • Functionality: Events, 2d+3d hud, idk. No java interop(?)
  • Platform: Forge + Fabric + Neoforge, Client only
• Carpet/Scarpet (Scarpet, custom)
  • Engine: Custom
  • Latest Release: Always latest snapshot (Last commit 7 hours ago)
  • Functionality: Honestly idk read docs, lots of deep integration
  • Platform: Fabric, Server only
• LiquidBounce (JS)
  • Engine: GraalJS
  • Latest Release: 1.21.4 (Last commit 15 hours ago)
  • Functionality: Java interop, various apis, localStorage, js devtools debugging support
  • Platform: Fabric, Client only
• MQS (My QOL Scripts) (JS)
  • Engine: GraalJS
  • Latest Release: 1.21.4 (Last commit 6 hours ago)
  • Functionality: Java interop, ES2024, Events, Commands, Keybinds, Confugration, Rendering and "more" APIs, in-memory hooking, gui system, "powerful integrated console", per-script setting & keybind system.
  • Platform: Fabric, Client only
• Minescript (Python-like Pyjinn)
  • Engine: Custom, Pyjinn
  • Latest Release: 1.21.10 (Last commit 2 weeks ago)
  • Features: Python & Pyjinn scripts, deep Java interop, events, no mixins
  • Platform: Fabric + Forge + Neoforge, Client only