Neoforge Mods for Minecraft Java
Browse 104 free Neoforge mods for Minecraft Java — popular picks include SL Library, SLM: Epic Fight, LYIVX's Core.
Step by step: How to install Minecraft Java mods & modpacks
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SL Library
Adds various base utilities, synchronization help, policy, packet sending and data driven
SLM: Epic Fight
Add utilities to create passive skills, innate skills, and implement events in Skills for Epic Fight; model, registry & sync utilities.
LYIVX's Core
Mod Utilities For My Mods Not Useful For Anyone Else.
Void Lib
A lib that adds various utilities to mod development
Modulation
A growing collection of quality-of-life tweaks, bug fixes, and cross-mod integrations for modpack creators!
SolLib
Lets mods shine by bringing a constellation of (mostly) data utilities.
Just Utilities
A personal use Multiloader Library
More Density Functions
Utility mod to add more density functions for world generation datapacks.
Ethecore
Adds an animation and model system, as well as other utilities.
JourneyMap Waypoint Syncing (JMWS)
This mod allows you to save waypoints on JourneyMap between multiple devices via the player/account UUID on the server
Matthiesen Lib API
The Server-side API for Matthiesen Lib, providing utilities and features for mod developers using the library
Sculk Dragon Utils
A utility mod that adds a number of potion effects (and eventually a command) related to Sculk.

IFramesTweaker
Tweaks How Invincibility Frames are handled to make fast weapons function properly.
Cobblemon Realms Core
A lightweight Cobblemon utility mod providing quality of life features and shared systems, designed for Cobblemon Realms but fully compatible with any modpack.
Mango's MultiBlock Library Revived
Provides some useful utilities for making Multiblock Structures
Scalar Core
Scalar Core is a library mod for Minecraft that provides a variety of utilities and tools for modders.
Moonlight Core
Moonlight Core is a layer abstraction of Minecraft mod loaders that is aimed to help with multi-loader mod development giving developers utilities for their mods.
Music and Melody
Comprehensive music overhaul powered by Albums, Playlists and Events, alongside a fitting soundtrack expansion and various music tweaks
Vesper's Compatibility Compendium
Visual mod integrations & tweaks, as well as memory leak fixes for various mods
Mixin Helper
Utility mod for modpack developers that provides complete control over mixin behavior
Café Core
Core library mod by Café Leblanć. Provides shared systems and utilities used by other mods from the same studio. Not standalone — required only as a dependency.
TidyInv
Smart, fast, server-friendly inventory sorting with 7 modes, vertical sort, locked slots, profiles, chest presets, deposit/restock/dump/take buttons, in-game config GUI, and a public API. Works in your inventory and in any chest, barrel or shulker.
MariesLib
MariesLib is a shared NeoForge 1.21.1 library powering Marie’s mods. It provides runtime item classification, mod compatibility discovery, registry infrastructure, and developer utilities
Lazr's Lib Ported
A ported library containing utilities for ported Lazr's Mods.
Psi Tweaks
Overpowered patches to Psi.
Technology Valley Tweaks
Some addons for Technology Valley modpack
Nexus API
Bulk of common platform-agnostic utilities aimed at reducing boilerplate/compatibility issues, thereby streamlining mod development on MultiLoader and other platforms.
Framed Maps Fix
Makes FramedBlocks display as their camo blocks on Xaero's Minimap, Xaero's World Map, and JourneyMap.
SOLEA API
SoleaAPI is a utility mod that combines homes, warps, TPA, teams, moderation, and combat-log tools into one configurable package with dynamic prefix support and EN/FR localization.
Hiiragi Core
Library and Utilities mod for Hiiragi's mods

Sinew
A library mod with general utilities and features.
Easy Bee
A completly new way to trasport bees with extra tweaks
ActiveEnchantmentsLib
A small lib that allows your enchantments to apply in the player's inventory and provides few utilities
FigureStoneLib
Library with basic utilities for FigureStone projects
Smashable Blocks
Smashable Blocks is a Minecraft NeoForge utility mod which, via a json file interface, allows customisation of the behaviour of any block when smashed (here defined as collided with at speed).
Fools Rise Tweaks
Small mod for Fools Rise modpack! Added progression for modpack and some more!