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ItemFlexerMinecraft mod for 1.21.11

Simple server-side mod that allows you to flex you items

server onlynewest supported release 1.21.11Utility
Latest version
1.3.4
Minecraft
1.15 to 1.21.11
Java
Java 21+
Loaders
Quilt, Fabric
Licence
MIT
Downloads
63.0k
Updated
10 mo ago
Available on
Modrinth
Space NodeOur hosting

Host ItemFlexer servers

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

  • 1.21.11
  • Quilt
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11Quilt, Fabric21+declared9 Dec 2025
1.21.10Quilt, Fabric21+declared7 Oct 2025
1.21.9Fabric, Quilt21+declared30 Sept 2025
1.21.5Quilt, Fabric21+declared25 Mar 2025
1.21.4Quilt, Fabric21+declared3 Dec 2024
1.21.3Quilt, Fabric21+declared23 Oct 2024
1.21.2Quilt, Fabric21+declared22 Oct 2024
1.21.1Quilt, Fabric21+declared8 Aug 2024
1.21Quilt, Fabric21+declared13 Jun 2024
1.20.2Quilt, Fabric17+declared20 Sept 2023
1.20.1Quilt, Fabric17+declared12 Jun 2023
1.19.2Quilt, Fabric17+declared5 Aug 2022
1.19.1Quilt, Fabric17+declared27 Jul 2022
1.19Fabric, Quilt17+declared7 Jun 2022
1.18.2Quilt, Fabric17+declared28 Feb 2022
1.18.1Quilt, Fabric17+declared10 Dec 2021
1.18Fabric, Quilt17+declared30 Nov 2021
1.17.1Quilt, Fabric16+declared6 Jul 2021
1.17Quilt, Fabric16+declared8 Jun 2021
1.16.5Quilt, Fabric8+declared14 Jan 2021
1.16.4Fabric, Quilt8+declared29 Oct 2020
1.16.3Quilt, Fabric8+declared10 Sept 2020
1.16.2Quilt, Fabric8+declared11 Aug 2020
1.16.1Fabric, Quilt8+declared24 Jun 2020
1.16Quilt, Fabric8+declared23 Jun 2020
1.15.2Quilt, Fabric8+declared17 Jan 2020
1.15.1Quilt, Fabric8+declared16 Dec 2019
1.15Quilt, Fabric8+declared9 Dec 2019

Download

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

Most recently published release

1.3.4release24 Jan 2026

itemflexer-1.3.4.jar · 0.3 MB · for 1.21.11, 1.21.10, 1.21.9 · Fabric

Download this release
3a51c9f3f61e…
Older versions18
  • 1.3.39 Jan 20251.21.5, 1.21.4, 1.21.30.3 MB816 downloads835d2cf7c929…Get
  • 1.3.211 Jul 20241.21.2, 1.21.1, 1.210.3 MB2.4k downloads62aa7570e6b7…Get
  • 1.3.125 Oct 20231.20.2, 1.20.10.2 MB14.4k downloadsb892c0c2c9f9…Choose file on publisher ↗
  • 1.3.09 Sept 20221.20.1, 1.19.2, 1.19.1, 1.190.1 MB41.1k downloads4c788515081e…Choose file on publisher ↗
  • 2.1.519 Jun 20221.190.1 MB502 downloads13f53a96f8d5…Choose file on publisher ↗
  • 1.2.418 Mar 20221.18.20.1 MB466 downloads81a617a55449…Get
  • 1.2.317 Jan 20221.18.1, 1.18, 1.17.1, 1.17270 downloads
  • 1.2.217 Jan 20221.16.5588 downloads
  • 1.2.117 Jan 20221.16.5185 downloads
  • 1.2.017 Jan 20221.16.5175 downloads
  • 1.1.417 Jan 20221.16.5172 downloads
  • 1.1.317 Jan 20221.17, 1.16.4, 1.16.3, 1.16.2, 1.16.1 +4 more228 downloads
  • 1.1.217 Jan 20221.16.4160 downloads
  • 1.1.117 Jan 20221.17, 1.16.4, 1.16.3, 1.16.2, 1.16.1 +4 more185 downloads
  • 1.1.017 Jan 20221.17, 1.16.4, 1.16.3, 1.16.2, 1.16.1 +4 more189 downloads
  • 1.0.217 Jan 20221.16.4, 1.16.3, 1.16.2, 1.16.1, 1.16 +3 more174 downloads
  • 1.0.117 Jan 20221.16.4, 1.16.3, 1.16.2, 1.16.1, 1.16 +3 more189 downloads
  • 1.0.017 Jan 20221.16.4, 1.16.3, 1.16.2, 1.16.1, 1.16 +3 more216 downloads

Frequently asked

Does ItemFlexer work on Minecraft 1.21.11?

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

Everything the author has declared, from 1.15 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

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

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does ItemFlexer support?

Quilt, 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 ItemFlexer?

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 ItemFlexer under?

MIT, 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 ItemFlexer?

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

Details from Modrinth, where the author last updated it on 24 Jan 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? .