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SPECIFICTION
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Neo-Loom

github.com

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Spec score 6.5 #31 of 35 in Minecraft Mod Development Tools

What it is

Neo-Loom is a free Gradle plugin for Minecraft mod development environments using NeoForge or MinecraftForge. It is a fork of Fabric Loom and is heavily based on Architectury Loom. Implemented support includes NeoForge 1.21+ and MinecraftForge 1.20.1+. The plugin supports multi-loader projects, dependency management, client and server scope, and dedicated server support. It provides run configurations for NeoForge and MinecraftForge covering server data, client data, and game test server environments. Neo-Loom supports Jar-in-Jar packaging, converts ClassTweaker or AccessWidener files to AccessTransformer format, and supports publishing and consuming ModDevGradle-compatible Access Transformers and Interface Injections. Devlaunch is listed as implemented. Setup uses the Fabric and RelativityMC Maven repositories and the Gradle Plugin Portal, with plugin IDs shown in the README. The repository is MIT licensed and points users to Discord for support. Listed unfinished work includes JUnit, production launch tasks, and split-source, client-only, and server-only setups for (Neo)Forge.

Spec sheet

Purpose
Neo Loom is a Gradle plugin for setting up Minecraft mod development environments.Read 7 Oct 2026 · github.com
Intended users
The README describes the plugin as a tool for Minecraft mod development, with support for NeoForge and MinecraftForge projects.Read 7 Oct 2026 · github.com
Support
The project README invites users to reach out through its Discord server.Read 7 Oct 2026 · github.com
License
The repository identifies its license as MIT.Read 7 Oct 2026 · github.com
Access conversion
It supports converting ClassTweaker or AccessWidener files to AccessTransformer format.Read 7 Oct 2026 · github.com
Build setup
The README shows Gradle plugin setup using the Fabric and RelativityMC Maven repositories and the Gradle Plugin Portal.Read 7 Oct 2026 · github.com
Current limitations
The README lists JUnit, production launch tasks, and split-source, client-only, and server-only setups for (Neo)Forge as to-dos.Read 7 Oct 2026 · github.com
Devlaunch
Devlaunch is listed as currently implemented.Read 7 Oct 2026 · github.com
Distribution
The README directs users to add the RelativityMC Maven repository and shows Gradle plugin IDs for using Neo Loom.Read 7 Oct 2026 · github.com
Forge configuration
The README documents run configurations for NeoForge and MinecraftForge, including server data, client data, and game test server environments.Read 7 Oct 2026 · github.com
Jar-in-Jar
Jar-in-Jar support is listed as currently implemented.Read 7 Oct 2026 · github.com
Maintainer profile
The RelativityMC GitHub organization links to a Discord server and does not display public organization members.Read 7 Oct 2026 · github.com
ModDevGradle
It supports publishing and consuming ModDevGradle-compatible Access Transformers and Interface Injections.Read 7 Oct 2026 · github.com
ModDevGradle compatibility
It supports publishing and consuming ModDevGradle-compatible Access Transformers and Interface Injections.Read 7 Oct 2026 · github.com
Packaging
Neo Loom supports Jar-in-Jar.Read 7 Oct 2026 · github.com
Planned work
The listed to-dos include JUnit, production launch tasks, and split source, client-only, and server-only setups for (Neo)Forge.Read 7 Oct 2026 · github.com
Supported versions
The README lists NeoForge 1.21+ and MinecraftForge 1.20.1+ as currently implemented.Read 7 Oct 2026 · github.com
Toolchain
It is a fork of Fabric Loom that supports the NeoForge and MinecraftForge modding toolchain and is heavily based on Architectury Loom.Read 7 Oct 2026 · github.com

Strong points and limits

Strong points

  • Supports NeoForge and MinecraftForge
  • Handles multi-loader projects
  • Provides Jar-in-Jar packaging
  • Converts access configuration formats
  • Supports dedicated server development

Limits

  • JUnit support is still a to-do
  • Production launch tasks are unfinished
  • Split-source setups remain planned
  • Client-only and server-only setups remain planned

Who it suits

Neo-Loom suits Minecraft mod developers building NeoForge or MinecraftForge projects with Gradle. It is especially relevant to teams needing shared tooling across client and server targets.

Verdict

Neo-Loom supplies Gradle-based tooling for NeoForge and MinecraftForge mod projects, including packaging and access-transformation workflows. Review the listed to-dos before depending on unfinished launch or source-layout features.

Where Specifiction places it

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