Menu

mod

ARLibMinecraft mod for 1.21.1

core lib for modular gui, networking, multiblock and some other stuff i need in all my projects

client and servernewest supported release 1.21.1
Latest version
1.0.33
Minecraft
1.21 to 1.21.1
Java
Java 21+
Loader
NeoForge
Licence
LicenseRef-All-Rights-Reserved
Downloads
267.2k
Updated
7 mo ago
Available on
Modrinth
Space NodeOur hosting

Host ARLib servers

One click and ARLib is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version ARLib declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024
1.21NeoForge21+declared13 Jun 2024

Download

From ARLib’s own host. Nothing is re-hosted here.

Most recently published release

1.0.33release29 Mar 2026

arlib-1.0.33.jar · 0.3 MB · for 1.21.1, 1.21 · NeoForge

Download this release
d8f183135025…
Older versions5
  • 1.0.2422 Feb 20261.21.1, 1.210.3 MB183 downloads8b7cf38e4bb9…Get
  • 1.0.1614 Mar 20251.21.1, 1.210.3 MB1.6k downloadsadbc090b7b46…Get
  • 1.0.1015 Feb 20251.21.1, 1.210.3 MB123 downloads87948bff9c88…Get
  • 1.0.81 Jan 20251.21.1, 1.210.3 MB263.6k downloads992b290de7ab…Get
  • 1.0.729 Dec 20241.21.1, 1.210.3 MB82 downloadsa22856174343…Get

Frequently asked

Does ARLib work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version ARLib declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does ARLib support?

Everything the author has declared, from 1.21 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install ARLib on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does ARLib support?

NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for ARLib?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is ARLib under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install ARLib?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download ARLib safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

GeckoLibA 3D animation library for entities, blocks, items, armor, and more!BookshelfAn open source library for other mods!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Details from Modrinth, where the author last updated it on 29 Mar 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .