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SupplementariesMinecraft mod for 1.21.1

Vanilla+ additions: Jars, signposts, faucets, weather vanes spring launchers, sconces, planters, lights, decoration and automation

client and servernewest supported release 1.21.1UtilityGame MechanicsStorageDecoration
Latest version
1.21.1-4.0.2
Minecraft
1.15.2 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Forge, Fabric
Licence
LicenseRef-Supplementaries-Team-License
Downloads
28.9M
Updated
10 d ago
Available on
Modrinth
Space NodeOur hosting

Host Supplementaries servers

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

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

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Forge, Fabric21+declared8 Aug 2024
1.21Fabric, NeoForge, Forge21+declared13 Jun 2024
1.20.1Forge, NeoForge, Fabric17+declared12 Jun 2023
1.20Forge, NeoForge, Fabric17+declared2 Jun 2023
1.19.4Forge, NeoForge, Fabric17+declared14 Mar 2023
1.19.2Forge, NeoForge, Fabric17+declared5 Aug 2022
1.19.1Forge, NeoForge, Fabric17+declared27 Jul 2022
1.19Fabric, Forge, NeoForge17+declared7 Jun 2022
1.18.2NeoForge, Forge, Fabric17+declared28 Feb 2022
1.18.1Fabric, NeoForge, Forge17+declared10 Dec 2021
1.18Forge, NeoForge, Fabric17+declared30 Nov 2021
1.17.1Fabric, NeoForge, Forge16+declared6 Jul 2021
1.16.5NeoForge, Forge, Fabric8+declared14 Jan 2021
1.16.4Fabric, NeoForge, Forge8+declared29 Oct 2020
1.16.3Forge, NeoForge, Fabric8+declared10 Sept 2020
1.15.2NeoForge, Forge, Fabric8+declared17 Jan 2020

Download

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

Browse 31 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • NeoForge

    1.21.1-4.0.2 · 16 Oct 2026 · supplementaries-1.21.1-4.0.2-neoforge.jar

    Get NeoForge

  • Fabric

    1.21.1-4.0.1 · 11 Oct 2026 · supplementaries-1.21.1-4.0.1-fabric.jar

    Get Fabric

  • Fabric, NeoForge

    1.21.1-3.8.4 · 24 Jul 2026

    Multiple loaders are listed; verify the file before downloading.

    Choose file on publisher ↗

Most recently published release

1.21.1-4.0.2release16 Oct 2026

supplementaries-1.21.1-4.0.2-neoforge.jar · 13.2 MB · for 1.21.1 · NeoForge

Download this release
092034ac007c…
Older versions24
  • 1.21.1-4.0.111 Oct 20261.21.113.0 MBa249eace57a6…Get
  • 1.20-3.1.44-fabric11 Oct 20261.20.112.9 MB127f510b6d5a…Get
  • 1.20-3.1.44-forge11 Oct 20261.20.113.1 MBc8307fb76672…Choose file on publisher ↗
  • 1.21.1-4.0.011 Oct 20261.21.113.0 MBdeaf04032669…Get
  • 1.21.1-3.9.910 Sept 20261.21.112.8 MBf5071c78bdd2…Get
  • 1.21.1-3.9.86 Sept 20261.21.112.9 MBf5818156d0f6…Get
  • 1.21.1-3.9.73 Sept 20261.21.112.8 MBe1a8d6819066…Get
  • 1.21.1-3.9.630 Aug 20261.21.112.8 MBe991f6b44c0f…Get
  • 1.21.1-3.9.528 Aug 20261.21.112.9 MB84cba24e291a…Get
  • 1.21.1-3.9.324 Aug 20261.21.112.7 MB0ccccf9bc1a5…Get
  • 1.21.1-3.9.119 Aug 20261.21.112.9 MBb72fad1d77d6…Get
  • 1.21.1-3.8.1013 Aug 20261.21.112.7 MBb383796b239e…Get
  • 1.21.1-3.8.911 Aug 20261.21.112.9 MBc8d6c2aa5387…Get
  • 1.21.1-3.8.85 Aug 20261.21.112.7 MB885e7b4358e9…Get
  • 1.21.1-3.8.530 Jul 20261.21.112.7 MB388d0fb868d9…Get
  • 1.21.1-3.8.424 Jul 20261.21.112.7 MBa2cd1d384b32…Choose file on publisher ↗
  • 1.21.1-3.8.320 Jul 20261.21.112.7 MB82dab6de6bfb…Choose file on publisher ↗
  • 1.21.1-3.8.216 Jul 20261.21.112.8 MBfcbca57f442d…Choose file on publisher ↗
  • 1.21.1-3.8.012 Jul 20261.21.112.8 MB99e030f838e6…Choose file on publisher ↗
  • 1.21.1-3.7.72 Jul 20261.21.112.8 MBa46527c3ed08…Choose file on publisher ↗
  • 1.21.1-3.7.421 Jun 20261.21.112.6 MB1315ed7058ca…Choose file on publisher ↗
  • 1.21.1-3.7.221 Jun 20261.21.112.6 MB57e3af5bed80…Choose file on publisher ↗
  • 1.21.1-3.7.020 Jun 20261.21.112.6 MB343c25db4355…Choose file on publisher ↗
  • 1.21.1-3.6.813 Jun 20261.21.112.7 MB5636533508d2…Get

Dependencies

What Supplementariesdeclares 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.Moonlight LibRequired. dynamic data pack and registration, villager activities, custom map marker and a lot more

Frequently asked

Does Supplementaries work on Minecraft 1.21.1?

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

Everything the author has declared, from 1.15.2 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 Supplementaries 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 Supplementaries support?

NeoForge, Forge, 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 Supplementaries?

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 Supplementaries need to run?

It declares Fabric API and Moonlight Lib 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 Supplementaries under?

LicenseRef-Supplementaries-Team-License, 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 Supplementaries?

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 Supplementaries 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.

BookshelfAn open source library for other mods!GeckoLibA 3D animation library for entities, blocks, items, armor, and more!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+)

Used by

4 projects list Supplementaries as a required dependency.

Integrated Dungeons AriseIntegrated Dungeons Arise is a Mod that overhauls WDA with integration.Raspberry CoreA collection of compatibility blocks, minor features, and fixes designed for the Raspberry Flavoured modpack.EMF Compat: SupplementariesMakes Supplementaries items work correctly with animated EMF player models.Integrated Mowzie's MobsIntegrated Mowzie's Mobs is a mod that revamps and integrates all the structures of the mod with many improvements.

Details from Modrinth, where the author last updated it on 16 Oct 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? .