Mods for Minecraft Java
Browse 9,129 free mods for Minecraft Java — popular picks include OpticalJS, Harmonia, Cumulus.
Step by step: How to install Minecraft Java mods & modpacks
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OpticalJS
KubeJS support for Create Optical
Harmonia
Add compatability between Cadmus and Xaero's Worldmap.
Cumulus
An API for custom and compatible main menu registration.
Create Aeronautics: Copycat Wing
Added support for Copycats+ blocks as wing parts in Create Aeronautics.
ChimericLib
Shared library for chimericdream's mods
Tweaked Petroleum
Adding more configuration options to Immersive Petroleum
Atlas Core
A library (currently only for configs) used by Atlas Development projects
Void Lib
A lib that adds various utilities to mod development
ShiftedLib
My personal library that used by my mods.
Modern Networking
Multiversioned and multiloader network packet API based on 1.20.6+'s method of packets.
Thut Wearables
Expanded Accessory System for Minecraft
Modulation
A growing collection of quality-of-life tweaks, bug fixes, and cross-mod integrations for modpack creators!
MomentariyModder'Applications
Core for MomentariyModder mods.
Orbs of Crafting
Craft items that modify other Items!

filament
Data driven Items, Blocks, Decorations and Mobs for Fabric based servers. No client mods required!
ManaTweaks
Botania/CraftTweaker add-on allowing inventory mana manipulation
ItemFig
A simple library for saving and reading config for items with use of JSON
Strut Your Stuff (Library)
Library used for spanning blocks, features collisions, interactions and so on in an accessible and reusable library.
Xenon Lib
An incomplete fork of CodeChickenLib for Fabric
LibrarianLib-Continuous
Stand with LibrarianLib!

Sketch
A library for Team Abode's mods.
Forge Mixin Fix
Forge Mixin Fix
S-Lib
A core utility library providing shared code for Stalemated's mods.
SpectreLib
Cross-platform library for Illusive Soulworks mods.
GooeyLibs
A user-interface based library useful for creating front-end UIs for existing game screens on both Forge and Fabric
Canvas Renderer
Advanced Rendering Engine for Fabric
Armory - Armoring the World
Make it as you wish.
SDM GameStages Helper
API for Game Stages Mod by SDM
SolLib
Lets mods shine by bringing a constellation of (mostly) data utilities.
Flight API
A simple, zero-dependency API for flight controlling and detecting mods that break flight.
Custom Tooltip API
Data-driven tooltip text creation.
Apothecary - Potion Expansion
A potion expansion with a large variety of different effects!
Tinkers' Advanced-Core
Api Lib for Tinkers' Advanced Series.
Prometheus
🔥 Backbone of modded fire 🔥
Terminal Ballistics Simulation for Block-Sized Projectiles
Library mod implementing a sort of realistic terminal ballistics simulation on a block like scale.
Local Looks
Adds a magic mirror that can be used to change player appearance for individual worlds/servers.