mod
S-LibMinecraft mod for 1.21.1
An easy to use config and utility library.
- Latest version
- 3.0.1+1.21.1
- Minecraft
- 1.20.1 to 1.21.1
- Java
- Java 21+
- Loaders
- Fabric, Forge, NeoForge
- Licence
- MIT
- Downloads
- 175.2k
- Updated
- 1 mo ago
- Available on
- Modrinth
Minecraft versions
Every version S-Lib declares support for, newest first, with the Java runtime that version needs.
Download
From S-Lib’s own host. Nothing is re-hosted here.
For Minecraft 1.21.1
Choose the loader you use before downloading.
- Get Fabric
Fabric
3.0.1+1.21.1 · 30 Sept 2026 · s-lib-fabric-3.0.1+1.21.1.jar
- Get NeoForge
NeoForge
2.1.1+1.21.1 · 9 Sept 2026 · s-lib-neoforge-2.1.1+1.21.1.jar
Most recently published release
s-lib-fabric-3.0.1+1.21.1.jar · 0.2 MB · for 1.21.1 · Fabric
2da0fb02cced…Older versions24Hide older versions
- 3.0.1+1.20.130 Sept 20261.20.10.2 MB
7b532e2f537f…Get - 3.0.0+1.21.125 Sept 20261.21.10.2 MB
cd65c0d9b1f3…Get - 3.0.0+1.20.125 Sept 20261.20.10.2 MB
4f23f4a40037…Get - 2.1.1+1.21.19 Sept 20261.21.196 KB
be662bd70ebe…Get - 2.1.1+1.20.19 Sept 20261.20.192 KB
280e4788bc44…Get - 2.1.0+1.21.129 Aug 20261.21.195 KB
07dc66563855…Get - 2.1.0+1.20.129 Aug 20261.20.192 KB
f8300a11bb89…Get - 2.0.1+1.21.129 Aug 20261.21.189 KB
d0a6ebe55026…Get - 2.0.1+1.20.129 Aug 20261.20.190 KB
416929ff6900…Get - 2.0.0+1.21.125 Aug 20261.21.190 KB
cf6b745e2457…Get - 2.0.0+1.20.125 Aug 20261.20.186 KB
0c15ccb20c5f…Get - 1.0.6+1.21.119 Aug 20261.21.179 KB
5e7afd15e8d1…Get - 1.0.6+1.20.119 Aug 20261.20.180 KB
3dea710d3b0d…Get - 1.0.5+1.21.121 Jul 20261.21.176 KB161 downloads
cc0f692f96f7…Get - 1.0.5+1.20.121 Jul 20261.20.177 KB51 downloads
14c44ad9d482…Get - 1.0.4+1.21.121 Jul 20261.21.176 KB6 downloads
688c5e2ce85f…Get - 1.0.4+1.20.121 Jul 20261.20.177 KB3 downloads
b863da9034b8…Get - 1.0.3+1.20.127 Jun 20261.20.176 KB46 downloads
0d299a0c0d18…Get - 1.0.3+1.21.127 Jun 20261.21.175 KB225 downloads
ff5b27f81a50…Get - 1.0.2+1.21.121 Jun 20261.21.175 KB15 downloads
bf33e1fe2201…Get - 1.0.2+1.20.121 Jun 20261.20.175 KB20 downloads
2f63d199aa0c…Get - 1.0.1+1.21.118 Jun 20261.21.175 KB7 downloads
766b8ea37066…Get - 1.0.0+1.21.118 Jun 20261.21.175 KB10 downloads
c5034f25ce76…Get - 1.0.016 Jun 20261.20.175 KB8 downloads
b4930292746a…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.
Do I need to install S-Lib on the client or the server?
The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.
Which platform or loader does S-Lib support?
Fabric, Forge, NeoForge. 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.
What licence is S-Lib 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 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 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.
Used by
5 projects list S-Lib as a required dependency.
Is this information wrong or missing something? .