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UranusMinecraft mod for 1.21.1

A Library contains animation engine, object helper and so on. Partly based on LLibrary and Citadel.

client and servernewest supported release 1.21.1UtilityLibrary
Latest version
2.4.1
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Fabric, Forge
Licence
LGPL-3.0-or-later
Downloads
1.6M
Updated
6 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Uranus servers

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

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

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Fabric, Forge21+declared8 Aug 2024
1.20.4Forge, Fabric, NeoForge17+declared7 Dec 2023
1.20.1Fabric, NeoForge, Forge17+declared12 Jun 2023

Download

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

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • Fabric, NeoForge

    2.4.1 · 29 Apr 2026

    Multiple loaders are listed; verify the file before downloading.

    Choose file on publisher ↗

  • NeoForge

    2.3.1-bugfix2 · 21 Aug 2025 · uranus-2.3.1-bugfix2-1.21.1-neoforge.jar

    Get NeoForge

  • Fabric, Forge, NeoForge

    2.2.5 · 18 Feb 2025

    Multiple loaders are listed; verify the file before downloading.

    Choose file on publisher ↗

Most recently published release

2.4.1release29 Apr 2026

uranus-2.4.1-1.21.1-neoforge.jar · 0.8 MB · for 1.21.1 · Fabric, NeoForge

Choose file on publisher ↗
bb7119fc18ed…
Older versions17

Frequently asked

Does Uranus work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Uranus 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 Uranus support?

Everything the author has declared, from 1.20.1 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 Uranus 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 Uranus support?

NeoForge, Fabric, Forge. 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 Uranus?

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 Uranus under?

LGPL-3.0-or-later, 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 Uranus?

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 Uranus 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.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Used by

1 project lists Uranus as a required dependency.

IceAndFire Community EditionThe community version of mod Ice and Fire

Details from Modrinth, where the author last updated it on 29 Apr 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? .