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MagnusMinecraft mod for 1.21.11

A modular, high-performance, and resilient synchronization suite for Minecraft Fabric servers. Features real-time inventory sync, cross-server chat, and global player management.

newest supported release 1.21.11TechnologyUtilityStorageOptimization
Latest version
v1.4.2
Minecraft
1.21.1 to 1.21.11
Java
Java 21+
Loader
Fabric
Licence
LGPL-3.0-only
Downloads
296
Updated
2 mo ago
Available on
Modrinth

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11Fabric21+declared9 Dec 2025
1.21.10Fabric21+declared7 Oct 2025
1.21.9Fabric21+declared30 Sept 2025
1.21.8Fabric21+declared17 Jul 2025
1.21.7Fabric21+declared30 Jun 2025
1.21.6Fabric21+declared17 Jun 2025
1.21.5Fabric21+declared25 Mar 2025
1.21.4Fabric21+declared3 Dec 2024
1.21.3Fabric21+declared23 Oct 2024
1.21.2Fabric21+declared22 Oct 2024
1.21.1Fabric21+declared8 Aug 2024

Download

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

Most recently published release

v1.4.2release6 Sept 2026

magnus-1.4.2 # x-release-please-version.jar · 3.8 MB · for 1.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more · Fabric

Download this release
52c41dbd9bce…
Older versions12
  • v1.4.117 Jul 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more3.8 MB20 downloadse548feaf494a…Get
  • v1.4.0+github.115 Jul 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more3.8 MB5 downloads00168ce05b41…Get
  • v1.4.015 Jul 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more3.8 MB7 downloads00168ce05b41…Get
  • v1.3.31 Jul 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +6 more3.8 MB12 downloads41167a5095b5…Get
  • v1.3.21 Feb 20261.21.13.8 MB41 downloads6cc5e1ba836d…Get
  • v1.3.131 Jan 20261.21.13.8 MB12 downloads67eb6528333a…Get
  • v1.3.031 Jan 20261.21.13.8 MB16 downloads9a9bf13c56b4…Get
  • v1.2.031 Jan 20261.21.13.7 MB14 downloads73d316cdd6ec…Get
  • v1.1.230 Jan 20261.21.13.7 MB14 downloadsce6e4290a2fd…Get
  • v1.1.130 Jan 20261.21.13.7 MB12 downloadsdda314bf99b2…Get
  • v1.1.030 Jan 20261.21.13.7 MB14 downloads644ce9754e9d…Get
  • v1.0.029 Jan 20261.21.13.7 MB18 downloads535134aa19af…Get

Dependencies

What Magnusdeclares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

Fabric APIRequired. Lightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.Fabric Language KotlinRequired. This is a mod that enables usage of the Kotlin programming language for Fabric mods.

Frequently asked

Does Magnus work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version Magnus 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 Magnus support?

Everything the author has declared, from 1.21.1 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Magnus support?

Fabric. 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 Magnus?

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 does Magnus need to run?

It declares Fabric API and Fabric Language Kotlin as required, so those have to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Magnus under?

LGPL-3.0-only, 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 Magnus?

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 Magnus 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.

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+)Collective🎓 Collective is a shared library with common code for all of Serilum's mods.Xaero's MinimapDisplays the nearby world terrain, players, mobs, entities in the corner of your screen. Lets you create waypoints which help you find the locations you've marked.

Details from Modrinth, where the author last updated it on 6 Sept 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? .