Fabric Mods for Minecraft Java
Browse 3,186 free Fabric mods for Minecraft Java — popular picks include Cloth Config API (Fabric/Forge/NeoForge), Fabric API, CraftTweaker.
Step by step: How to install Minecraft Java mods & modpacks
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Cloth Config API (Fabric/Forge/NeoForge)
Config Screen API for Minecraft

Fabric API
Lightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
CraftTweaker
CraftTweaker allows modpacks and servers to customize the game. With CraftTweaker you can change recipes, script events, add new commands and even change item properties!
Cupboard
Cupboard provides code, frameworks, and utilities for minecraft mods
Item Filters
Item Filters is a library mod that is used by mods like FTB Quests. It adds several filter items that let you precisely select which items to match.
Cyclops Core
Library mod for EvilCraft, Integrated Dynamics and others.
Framework
A common library powering all of MrCrayfish's Mods
FTB XMod Compat
Official multi-mod integrations support for the FTB Mods
YetAnotherConfigLib (YACL)
A builder-based configuration library for Minecraft!
ForgeEndertech
Core library powering Endertech mods
Configured
Automatic in-game configuration menus for every mod!
Fabric Language Kotlin
This is a mod that enables usage of the Kotlin programming language for Fabric mods.
YetAnotherConfigLib
A builder-based configuration library for Minecraft.
iChunUtil
Shared library used by iChun's mods
Reborn Core
Powering Team Reborn
The One Probe
More immersive alternative for WAILA
Valhelsia Core
API for the Valhelsia mods and friends.

ValkyrieLib
Library for all of ValkyrieofNight's Mods
Better Combat [Fabric & Forge]
⚔️ Easy, spectacular and fun melee combat system from Minecraft Dungeons.
Sodium/Embeddium Options API
Config API for adding Sodium/Embeddium options with a better categories menu
SmartBrainLib (Forge/Fabric/Quilt)
A smarter brain system for Minecraft

Text Placeholder API
Placeholder and Text manipulation library for your Minecraft mods.
More Culling
A mod that changes how multiple types of culling are handled in order to improve performance
Almost Unified
Unify all resources.
Collective
🎓 Collective is a shared library with common code for all of Serilum's mods.
Puzzles Lib
Why is it called Puzzles? That's the puzzle.

Modonomicon
Data-driven minecraft in-game documentation with progress visualization.
PolyLib
A Minecraft lib used for all of CreeperHosts mods
Roughly Enough Items Fabric/Forge/NeoForge (REI)
Clean and Customizable. An easy way to browse recipes. Alternative to JEI Just Enough Items.
Konkrete [Fabric] [MOVED TO NEW PAGE]
Just another boring library mod.
CreativeCore
A core mod
Trinkets (Fabric)
A data-driven accessory mod
EpheroLib
Fabric/Forge library mod to make it a bit easier to develop mods for both platforms
Balm (Outdated Versions)
Abstraction Layer for Multiplatform Mods
U Team Core
This libary contains many usefull modding stuff
Almanac Lib
A loader independent library containing shared code reused between mods and a fix for empty nbt issues.