Menu

mod

S-LibMinecraft mod for 1.21.1

An easy to use config and utility library.

newest supported release 1.21.1Library Api
Latest version
S-Lib 3.0.1 - Fabric 1.21.1
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Fabric, NeoForge, Forge
Licence
not stated
Downloads
1.1M
Updated
1 mo ago
Available on
CurseForge

Minecraft versions

Every version S-Lib declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric, NeoForge, Forge21+declared8 Aug 2024
1.20.1Fabric, NeoForge, Forge17+declared12 Jun 2023

Download

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

Browse 50 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • Fabric

    S-Lib 3.0.1 - Fabric 1.21.1 · 30 Sept 2026 · s-lib-fabric-3.0.1+1.21.1.jar

    Get Fabric

  • NeoForge

    S-Lib 3.0.1 - NeoForge 1.21.1 · 30 Sept 2026 · s-lib-neoforge-3.0.1+1.21.1.jar

    Get NeoForge

Most recently published release

S-Lib 3.0.1 - Fabric 1.21.1release30 Sept 2026

s-lib-fabric-3.0.1+1.21.1.jar · 0.2 MB · for 1.21.1 · Fabric

Download this release
d6de4180c405…
Older versions24
  • S-Lib 3.0.1 - Fabric 1.20.130 Sept 20261.20.10.2 MBdc12fef9fd10…Get
  • S-Lib 3.0.1 - NeoForge 1.21.130 Sept 20261.21.10.2 MB72295f54084d…Get
  • S-Lib 3.0.1 - Forge 1.20.130 Sept 20261.20.10.2 MB8eca5fcd0940…Get
  • S-Lib 3.0.0 - Fabric 1.21.125 Sept 20261.21.10.2 MB5025d51f851c…Get
  • S-Lib 3.0.0 - NeoForge 1.21.125 Sept 20261.21.10.2 MBf6dbf3bc7acb…Get
  • S-Lib 3.0.0 - Fabric 1.20.125 Sept 20261.20.10.2 MB9db5776b8700…Get
  • S-Lib 3.0.0 - Forge 1.20.125 Sept 20261.20.10.2 MB59a20809ed79…Get
  • S-Lib 2.1.1 - Forge 1.20.19 Sept 20261.20.195 KBbb3417f626ee…Get
  • S-Lib 2.1.1 - Fabric 1.20.19 Sept 20261.20.192 KB5c66dedf55ad…Get
  • S-Lib 2.1.1 - Fabric 1.21.19 Sept 20261.21.195 KBe2da191b4be1…Get
  • S-Lib 2.1.1 - NeoForge 1.21.19 Sept 20261.21.196 KBfdb159203dea…Get
  • S-Lib 2.1.0 - Fabric 1.20.129 Aug 20261.20.192 KB9403a97d53ab…Get
  • S-Lib 2.1.0 - Forge 1.20.129 Aug 20261.20.195 KBd3ad1a20723d…Get
  • S-Lib 2.1.0 - NeoForge 1.21.129 Aug 20261.21.196 KB25bba4289f8b…Get
  • S-Lib 2.1.0 - Fabric 1.21.129 Aug 20261.21.195 KBd6195d8aeab9…Get
  • S-Lib 2.0.1 - Fabric 1.21.129 Aug 20261.21.189 KB9f80265fbeb6…Get
  • S-Lib 2.0.1 - NeoForge 1.21.129 Aug 20261.21.190 KB56ff26cf7ed3…Get
  • S-Lib 2.0.1 - Fabric 1.20.129 Aug 20261.20.186 KBcad707261e18…Get
  • S-Lib 2.0.1 - Forge 1.20.129 Aug 20261.20.190 KBc3a268439fcf…Get
  • S-Lib 2.0.0 - NeoForge 1.21.125 Aug 20261.21.190 KBa082ca923e6c…Get
  • S-Lib 2.0.0 - Fabric 1.21.125 Aug 20261.21.189 KBacac53e91fe4…Get
  • S-Lib 2.0.0 - Forge 1.20.125 Aug 20261.20.190 KBf25ee064f83d…Get
  • S-Lib 2.0.0 - Fabric 1.20.125 Aug 20261.20.186 KBe537d74c78e3…Get
  • S-Lib 1.0.6 - Fabric 1.21.119 Aug 20261.21.178 KB3d4d70bf4a65…Get

Frequently asked

Does S-Lib work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version S-Lib 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 S-Lib 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.

Which platform or loader does S-Lib support?

Fabric, NeoForge, 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 S-Lib?

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.

How do I install S-Lib?

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 S-Lib safely?

Start with the author's page on CurseForge, 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.

Details from CurseForge, where the author last updated it on 30 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? .