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Lazr's LibMinecraft mod for 1.21.1

A library containing many utilities for Lazr's Mods.

newest supported release 1.21.1Utility QolServer UtilityLibrary Api
Latest version
Lazr's Lib - 1.2.1 - Forge - 1.20.1
Minecraft
1.17 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge, Fabric
Licence
not stated
Downloads
1.6M
Updated
3 mo ago
Available on
CurseForge

Minecraft versions

Every version Lazr's Lib declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge, Fabric21+declared8 Aug 2024
1.21Fabric, NeoForge, Forge21+declared13 Jun 2024
1.20.6Fabric, NeoForge, Forge21+declared29 Apr 2024
1.20.5Fabric, NeoForge, Forge21+declared23 Apr 2024
1.20.4Fabric, NeoForge, Forge17+declared7 Dec 2023
1.20.3Fabric, Forge, NeoForge17+declared4 Dec 2023
1.20.2Forge, Fabric, NeoForge17+declared20 Sept 2023
1.20.1Fabric, Forge, NeoForge17+declared12 Jun 2023
1.20NeoForge, Fabric, Forge17+declared2 Jun 2023
1.19.4Forge, NeoForge, Fabric17+declared14 Mar 2023
1.19.3Forge, NeoForge, Fabric17+declared7 Dec 2022
1.19.2Fabric, Forge, NeoForge17+declared5 Aug 2022
1.19.1Fabric, NeoForge, Forge17+declared27 Jul 2022
1.19Fabric, NeoForge, Forge17+declared7 Jun 2022
1.18.2NeoForge, Fabric, Forge17+declared28 Feb 2022
1.18.1Fabric, NeoForge, Forge17+declared10 Dec 2021
1.18Forge, NeoForge, Fabric17+declared30 Nov 2021
1.17.1NeoForge, Forge, Fabric16+declared6 Jul 2021
1.17Fabric, NeoForge, Forge16+declared8 Jun 2021

Download

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

Browse 31 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • Forge

    Lazr's Lib - 1.2.1 - Forge - 1.21.1 · 18 Aug 2026 · lazrslib-forge-1.21.1-1.2.1.jar

    Get Forge

  • NeoForge

    Lazr's Lib - 1.2.1 - NeoForge - 1.21.1 · 18 Aug 2026 · lazrslib-neoforge-1.21.1-1.2.1.jar

    Get NeoForge

  • Fabric

    Lazr's Lib - 1.2.1 - Fabric - 1.21.1 · 18 Aug 2026 · lazrslib-fabric-1.21.1-1.2.1.jar

    Get Fabric

  • Forge, NeoForge

    Lazr's Lib - 1.1.1 - Forge - 1.21 · 23 Aug 2024

    Multiple loaders are listed; verify the file before downloading.

    Choose file on publisher ↗

Most recently published release

Lazr's Lib - 1.2.1 - Forge - 1.20.1release18 Aug 2026

lazrslib-forge-1.20.1-1.2.1.jar · 0.1 MB · for 1.20.1 · Forge

Download this release
04580c6b3e8c…
Older versions24
  • Lazr's Lib - 1.2.1 - Forge - 1.21.118 Aug 20261.21.10.1 MB935255b09e9b…Get
  • Lazr's Lib - 1.2.1 - NeoForge - 1.21.118 Aug 20261.21.10.1 MBf6e34418e2a7…Get
  • Lazr's Lib - 1.2.1 - Fabric - 1.21.118 Aug 20261.21.10.3 MB5c54e75b0e5e…Get
  • Lazr's Lib - 1.2.1 - Fabric - 1.20.118 Aug 20261.20.10.3 MB25f1636fff8a…Get
  • Lazr's Lib - 1.2.0 - Forge - 1.20.113 Aug 20261.20.10.1 MBbf91e9670f4c…Get
  • Lazr's Lib - 1.2.0 - Fabric - 1.20.113 Aug 20261.20.10.4 MBb0f37e8450cf…Get
  • Lazr's Lib - 1.2.0 - NeoForge- 1.21.110 Aug 20261.21.10.1 MB4d750c3b73bc…Get
  • Lazr's Lib - 1.2.0 - Fabric - 1.21.110 Aug 20261.21.10.3 MB3b26dbd81985…Get
  • Lazr's Lib - 1.2.0 - Forge - 1.21.110 Aug 20261.21.10.1 MB843b1721883c…Get
  • Lazr's Lib - 1.1.1 - Forge - 1.1723 Aug 20241.17.1, 1.170.1 MB393b339a36d8…Choose file on publisher ↗
  • Lazr's Lib - 1.1.1 - Forge - 1.1823 Aug 20241.18.2, 1.18.1, 1.180.1 MBe93f8536c249…Choose file on publisher ↗
  • Lazr's Lib - 1.1.1 - Forge - 1.1923 Aug 20241.19.1, 1.190.1 MB63e1ebb586a7…Choose file on publisher ↗
  • Lazr's Lib - 1.1.1 - Forge - 1.19.223 Aug 20241.19.4, 1.19.3, 1.19.20.1 MB21e1993f0d3f…Choose file on publisher ↗
  • Lazr's Lib - 1.1.1 - Forge - 1.20.623 Aug 20241.20.60.1 MB041e7f0d0fb5…Choose file on publisher ↗
  • Lazr's Lib - 1.1.1 - Forge - 1.2023 Aug 20241.20.5, 1.20.4, 1.20.3, 1.20.2, 1.20.1 +1 more0.1 MB2be2715b4ed2…Choose file on publisher ↗
  • Lazr's Lib - 1.1.1 - Forge - 1.2123 Aug 20241.21.1, 1.210.1 MB354c97aa3b9f…Choose file on publisher ↗
  • Lazr's Lib - 1.1.0 - Forge - 1.17.127 Jun 20241.17.10.1 MB63aafff4ae41…Choose file on publisher ↗
  • Lazr's Lib - 1.1.0 - Forge - 1.1827 Jun 20241.18.2, 1.18.1, 1.180.1 MB9c8ea3178257…Choose file on publisher ↗
  • Lazr's Lib - 1.1.0 - Forge - 1.1927 Jun 20241.19.1, 1.190.1 MBffbfe436f4e3…Choose file on publisher ↗
  • Lazr's Lib - 1.1.0 - Forge - 1.19.227 Jun 20241.19.4, 1.19.3, 1.19.20.1 MBd0ee856473bf…Choose file on publisher ↗
  • Lazr's Lib - 1.1.0 - Forge - 1.2027 Jun 20241.20.4, 1.20.3, 1.20.2, 1.20.1, 1.200.1 MB78854ab5281b…Choose file on publisher ↗
  • Lazr's Lib - 1.1.0 - Forge - 1.20.627 Jun 20241.20.60.1 MB9ba5628b7af6…Choose file on publisher ↗
  • Lazr's Lib - 1.1.0 - Forge - 1.2127 Jun 20241.210.1 MB492d228a5f06…Choose file on publisher ↗
  • Lazr's Lib - 1.0.0 - Forge - 1.17.124 Jun 20241.17.10.1 MBbe396587be73…Choose file on publisher ↗

Frequently asked

Does Lazr's Lib work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Lazr'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 Lazr's Lib support?

Everything the author has declared, from 1.17 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 Lazr's Lib support?

Forge, NeoForge, 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 Lazr'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 Lazr'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 Lazr'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.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Details from CurseForge, where the author last updated it on 18 Aug 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? .