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mod

Open LoaderMinecraft mod for 1.21.1

An open source resource and data loader for Minecraft.

newest supported 1.21.1Utility QolServer UtilityCosmeticLibrary Api
Latest version
OpenLoader-Fabric-1.20.1-19.0.5.jar
Minecraft
1.14.4 to 1.21.1
Java
Java 21+
Loaders
Fabric, NeoForge, Forge, Quilt
Licence
not stated
Downloads
44.8M
Updated
7 mo ago
Available on
CurseForge
Space NodePartner

Host Open Loader servers

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

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

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric, NeoForge, Forge, Quilt21+declared8 Aug 2024
1.20.4NeoForge, Fabric, Quilt, Forge17+declared7 Dec 2023
1.20.3Fabric, Quilt, Forge, NeoForge17+declared4 Dec 2023
1.20.2NeoForge, Fabric, Quilt, Forge17+declared20 Sept 2023
1.20.1Fabric, NeoForge, Forge, Quilt17+declared12 Jun 2023
1.20Fabric, Quilt, Forge, NeoForge17+declared2 Jun 2023
1.19.4NeoForge, Fabric, Quilt, Forge17+declared14 Mar 2023
1.19.3Fabric, NeoForge, Forge, Quilt17+declared7 Dec 2022
1.19.2Fabric, Quilt, Forge, NeoForge17+declared5 Aug 2022
1.19.1Fabric, Quilt, Forge, NeoForge17+declared27 Jul 2022
1.19Fabric, Quilt, Forge, NeoForge17+declared7 Jun 2022
1.18.2Fabric, NeoForge, Forge, Quilt17+declared28 Feb 2022
1.18.1Fabric, Quilt, Forge, NeoForge17+declared10 Dec 2021
1.17.1Quilt, Forge, Fabric, NeoForge16+declared6 Jul 2021
1.17Fabric, Quilt, Forge, NeoForge16+declared8 Jun 2021
1.16.5Fabric, Quilt, Forge, NeoForge8+declared14 Jan 2021
1.16.4Fabric, Quilt, Forge, NeoForge8+declared29 Oct 2020
1.16.3Fabric, Quilt, Forge, NeoForge8+declared10 Sept 2020
1.16.2Forge, Fabric, Quilt, NeoForge8+declared11 Aug 2020
1.16.1Quilt, Forge, Fabric, NeoForge8+declared24 Jun 2020
1.15.2Fabric, Quilt, Forge, NeoForge8+declared17 Jan 2020
1.15.1Forge, Fabric, Quilt, NeoForge8+declared16 Dec 2019
1.15NeoForge, Fabric, Quilt, Forge8+declared9 Dec 2019
1.14.4Fabric, Quilt, Forge, NeoForge8+declared19 Jul 2019

Download

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

All 40 releases
OpenLoader-Fabric-1.20.1-19.0.5.jarrelease12 Feb 2026

OpenLoader-Fabric-1.20.1-19.0.5.jar · 0.0 MB · for 1.20.1

Download latest
075a2041acc5…
Older versions24
  • OpenLoader-Forge-1.20.1-19.0.5.jar12 Feb 20261.20.10.0 MB1 downloadsa0d862da2dd1…Get
  • OpenLoader-neoforge-1.21.1-21.1.5.jar19 May 20251.21.10.0 MB109 downloadsb4b49fa0bbef…Get
  • OpenLoader-forge-1.21.1-21.1.5.jar19 May 20251.21.10.0 MB0a5afb9da92d…Get
  • OpenLoader-fabric-1.21.1-21.1.5.jar19 May 20251.21.10.0 MB6b6babff8525…Get
  • OpenLoader-neoforge-1.21.1-21.1.4.jar14 May 20251.21.10.0 MB121 downloadsda42b24014d3…Get
  • OpenLoader-forge-1.21.1-21.1.4.jar14 May 20251.21.10.0 MB96a7eb5e9fc4…Get
  • OpenLoader-fabric-1.21.1-21.1.4.jar14 May 20251.21.10.0 MB941ed622d745…Get
  • OpenLoader-neoforge-1.21.1-21.1.3.jar14 May 20251.21.10.0 MB5 downloads616e87dcd85c…Get
  • OpenLoader-forge-1.21.1-21.1.3.jar14 May 20251.21.10.0 MB5 downloadsde74a7bb1393…Get
  • OpenLoader-fabric-1.21.1-21.1.3.jar14 May 20251.21.10.0 MB5 downloads653ed820c3ce…Get
  • OpenLoader-neoforge-1.21.1-21.1.2.jar28 Mar 20251.21.10.0 MB105.2k downloads587b8e35abfa…Get
  • OpenLoader-forge-1.21.1-21.1.2.jar28 Mar 20251.21.10.0 MB205 downloadsaf6853fe827c…Get
  • OpenLoader-fabric-1.21.1-21.1.2.jar28 Mar 20251.21.10.0 MB1.7k downloads3020201151e6…Get
  • OpenLoader-neoforge-1.21.1-21.1.1.jar8 Nov 20241.21.10.0 MB218.4k downloads854113067309…Get
  • OpenLoader-forge-1.21.1-21.1.1.jar8 Nov 20241.21.10.0 MB425 downloads1d52acb2f706…Get
  • OpenLoader-fabric-1.21.1-21.1.1.jar8 Nov 20241.21.10.0 MB2.4k downloads123a3fd53f6f…Get
  • OpenLoader-Fabric-1.20.1-19.0.4.jar24 May 20241.20.10.0 MB227.9k downloads032da4305432…Get
  • OpenLoader-Forge-1.20.1-19.0.4.jar24 May 20241.20.10.0 MB1.9M downloads13ee67dace28…Get
  • OpenLoader-NeoForge-1.20.4-22.1.7.jar11 Mar 20241.20.40.0 MB2.2k downloadsd7681405b20a…Get
  • OpenLoader-Forge-1.20.4-22.1.7.jar11 Mar 20241.20.40.0 MB983 downloads7e0d87681e69…Get
  • OpenLoader-Fabric-1.20.4-22.1.7.jar11 Mar 20241.20.40.0 MB2.0k downloads767d4552fd44…Get
  • OpenLoader-NeoForge-1.20.4-22.0.4.jar11 Mar 20241.20.40.0 MB65 downloads39481b70a6d7…Get
  • OpenLoader-Forge-1.20.4-22.0.4.jar11 Mar 20241.20.40.0 MB68 downloads480480faa93b…Get
  • OpenLoader-Fabric-1.20.4-22.0.4.jar11 Mar 20241.20.40.0 MB72 downloads2f6c78dbe36a…Get

Frequently asked

Does Open Loader work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Open Loader 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 Open Loader support?

Everything the author has declared, from 1.14.4 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which loader does Open Loader need?

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

Which Java version do I need for Open Loader?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

How do I install Open Loader?

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 Open Loader safely?

From the author's own page on CurseForge, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

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

Last checked 1 mo ago against CurseForge. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .