Minecraft version
Back to mods 
Modrinth · Minecraft mod
NexusLib
A multiloader general-purpose library mod
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which NexusLib release should I use?
Latest stable file 1.2.0
Game version 1.21.1
Loader NeoForge
NexusLib 1.2.0 targets 1.21.1 with NeoForge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is NexusLib required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
Client Optional
Dedicated server Optional
Loader for this release NeoForge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
The source marks this as usable on both the client and server.
What else does NexusLib 1.2.0 need?
1.2.0. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add NexusLib without breaking your instance.
Built for NexusLib 1.2.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.2.0. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.2.0. It opens that exact file at the source.
About this project
What does NexusLib add?
NexusLib is a library mod that contains some useful functions, helpers, and systems utilized by my mods.
- Loader-agnostic registry helpers for Multiloader projcts
- Public classes
- Utility methods
- Easily make families of blocks with automatic models, recipes, loot tables, and tags
- Create recipe trees for the Stonecutter
- Loader-agnostic tool action registry (stripping, tilling, pathing, etc)
- Registry for removing tint from specific blocks' particles
- Dripstone conversion registry
- Fluid interactions registry
- Easy code-based conditional item model overrides
- Easily create compatibility with other mods with automatic disabling
- Palette-template matrix sprite sources - a dynamic and compatibility-friendly version of paletted permutations
Code Help - @Yirmiri, @Artyrian
You can report bugs on GitHub.
Project description from Modrinth.
Pick your setup
NexusLib by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
1.21
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
NexusLib versions and loaders
1.2.0
nexuslib-neoforge-1.21.1-1.2.0.jar
18 Sept 2026
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
1.2.0
nexuslib-fabric-1.21.1-1.2.0.jar
18 Sept 2026
Client Optional Server Optional Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.1 · Fabric setup 1.21.1Fabric release
1.1.5
nexuslib-neoforge-1.21.1-1.1.5.jar
7 Jun 2026
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
1.1.5
nexuslib-fabric-1.21.1-1.1.5.jar
7 Jun 2026
Client Optional Server Optional Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.1 · Fabric setup 1.21.1Fabric release
1.1.4
nexuslib-neoforge-1.21.1-1.1.4.jar
15 Mar 2026
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
1.1.4
nexuslib-fabric-1.21.1-1.1.4.jar
15 Mar 2026
Client Optional Server Optional Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.1 · Fabric setup 1.21.1Fabric release
1.1.3
nexuslib-neoforge-1.21.1-1.1.3.jar
5 Jan 2026
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
1.1.3
nexuslib-fabric-1.21.1-1.1.3.jar
5 Jan 2026
Client Optional Server Optional Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.1 · Fabric setup 1.21.1Fabric release
1.1.2
nexuslib-neoforge-1.21.1-1.1.2.jar
11 Sept 2025
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
1.1.2
nexuslib-fabric-1.21.1-1.1.2.jar
11 Sept 2025
Client Optional Server Optional Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.21.1 · Fabric setup 1.21.1Fabric release
1.1.1
heccolib-neoforge-1.21.1-1.1.1.jar
18 Jun 2025
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
1.1.1
heccolib-fabric-1.21.1-1.1.1.jar
18 Jun 2025
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · Fabric setup 1.21.1Fabric release
Looking for an older file? The official Modrinth project page is in Resources.
mod Modrinth · Minecraft
Immersive Portals Updated
See through portals and teleport seamlessly without issues
mod CurseForge · Minecraft
TONI's Weaponry
50+ medieval weapons with their own stats and unique abilities: rapiers, katanas, greatswords, warhammers, halberds, scythes, slingshots, throwing knives and new shields.
mod CurseForge · Minecraft
Lifepath
Character progression for people who play, not plan: pick a species, choose a starting focus, and level thirteen skills by actually doing the work — mastery is maintained, not bought.