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ArcLib project artwork

CurseForge · Minecraft mod

ArcLib

This lib adds a lot of utilities to Minecraft.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which ArcLib release matches 26.2?

Updated yesterday
Best match for your filters arclib-26.2-neoforge-1.0.0.jar
Game version 26.2
Loader NeoForge

arclib-26.2-neoforge-1.0.0.jar targets 26.2 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is ArcLib required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release NeoForge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does arclib-26.2-neoforge-1.0.0.jar need?

arclib-26.2-neoforge-1.0.0.jar on 26.2. Every mod below is checked against that same setup.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add ArcLib without breaking your instance.

Built for arclib-26.2-neoforge-1.0.0.jar on 26.2. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use arclib-26.2-neoforge-1.0.0.jar. It targets 26.2 with NeoForge; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    The project page does not say whether this file belongs on the client, dedicated server, or both.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside arclib-26.2-neoforge-1.0.0.jar. It opens that exact file at the source.

About this project

What does ArcLib add?

ArcLib

Arc UI, rendering, and scripting support for Minecraft mods.

ArcLib brings the Arc framework to Minecraft, giving mods a shared foundation for interactive interfaces, 2D graphics, and JavaScript scripting.

If a mod you use requires ArcLib, install the matching version alongside it. ArcLib initializes automatically and provides the runtime that dependent mods need.

What it provides

  • UI components: Buttons, dialogs, text fields, scrollable panels, layouts, and animations for custom mod interfaces.
  • Minecraft integration: Connects Arc interfaces to Minecraft's rendering, fonts, mouse, and keyboard input.
  • JavaScript support: Includes a Rhino-based scripting environment for mods that use JavaScript to build tools or extend their functionality.
  • Shared utilities: Collections, math, file handling, serialization, and lifecycle events for mods built on Arc.
  • Dedicated server support: Provides a runtime for server-side logic without requiring a graphical environment.

The features you interact with in-game are provided by the mods that use ArcLib.

Supported versions

Minecraft Mod loaders Required Java
1.20.1 Fabric, Forge 17 or newer
1.21.1 Fabric, NeoForge 21 or newer
1.21.11 Fabric, NeoForge 21 or newer
26.2 Fabric, NeoForge 25 or newer

Installation

  1. Install a supported mod loader for your Minecraft version.
  2. Make sure your instance uses the Java version listed above.
  3. Download the ArcLib .jar matching both your Minecraft version and mod loader.
  4. Place the file in your instance's mods folder alongside the mod that requires it.
  5. On Fabric, install Fabric API for your Minecraft version and use Fabric Loader 0.19.5 or newer.
  6. Launch the game or dedicated server.

Install one ArcLib build per instance. For example, a Minecraft 1.21.1 Fabric instance uses arclib-1.21.1-fabric-<version>.jar.

Frequently asked questions

Do I need ArcLib on the client, server, or both?

ArcLib supports clients and dedicated servers. Install it wherever the mod that depends on it requires it. A client-only mod may only need ArcLib on the client; follow that mod's installation instructions.

Do I need to download Rhino separately?

No. ArcLib includes its Rhino JavaScript runtime.

Why don't I see a new menu or new items after installing it?

ArcLib is a library that works in the background. Its UI and scripting features become available through mods that use them.

Links and credits

Maintained by squi2rel. Licensed under Apache-2.0.

Project description from CurseForge.

Pick your setup

ArcLib by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

8 available setups

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

ArcLib versions and loaders

2 of 8 releases match
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Looking for an older file? The official CurseForge project page is in Resources.