Mods for Minecraft Java
Browse 9,201 free mods for Minecraft Java — popular picks include AE2 Wireless Terminal Library, Resourceful Lib, CERBON's API [Forge | Fabric | NeoForge].
Step by step: How to install Minecraft Java mods & modpacks
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AE2 Wireless Terminal Library
A library for AE2 addon wireless terminal which simplifies integration and adds infinite range capabilities
Resourceful Lib
Resourceful Lib
CERBON's API [Forge | Fabric | NeoForge]
A library mod for CERBON's Minecraft Mods
Patchouli
Accessible, Data-Driven, Dependency-Free Documentation for Minecraft Modders and Pack Makers

TerraBlender (Fabric)
A library mod for adding biomes in a simple and compatible manner!
YUNG's API
Library mod for YUNG's mods.
ServerConfig Updater
Allows Packdevs to update ServerConfigs
bad packets
Bad Packets allows packet messaging between different modding platforms.
CodeChickenCore
Base common code for all chickenbones mods.
LootTweaker
A CraftTweaker addon that allows loot tables to be edited with ZenScript
Pufferfish's Skills [Fabric & Forge & NeoForge]
Adds a fully configurable skill system to the game.
Recipe Stages
Allows for Crafting table recipes to be locked behind stages.

Cardinal Components API
API for data-driven content
Potion Core
Adds a whole lot of potion effects to the game.
FTB Library (Fabric)
Common code for all GUI stuff in FTB Mods. Component/layer based GUI creation. Used by mods such as FTB Chunks, FTB Quests, etc. (Fabric version)
BaguetteLib
A simple but powerful event library that gives mod developers the control they actually need.
SuperMartijn642's Config Lib
Config Lib makes dealing with config files just a bit easier.
MRU
A library mod used by Cassian and IMB11's mods to function.
Atlas Lib
A serialzation and math libary for minecraft mods.
CoroUtil
Shared library mod for Corosus's mods
Mercurius
An analytics mod for those interested in numbers
FTB Teams (Fabric)
Library for mods that can utilize team progression like FTB Chunks and FTB Quests. (Fabric version)
ShadowMC
A library mod required by all of my other mods.
Integrated API
The library mod for the Integrated Structures series
Forge Config Screens [Archived]
Allows Forge's configs to be configured directly in-game. Quick and easy with a beautiful design!
Ponder for KubeJS
Create custom Ponder scenes with KubeJS.

EMI
A featureful and accessible item and recipe viewer
MonoLib
A non-invasive library mod for Fabric, Forge, and NeoForge.
MidnightLib
Common library providing a lightweight configuration system
Forgified Fabric API
Fabric API implemented on top of NeoForge
Moog's Structure Lib (moogs_structures)
This is a library mod for the Moogs Structure series
LibrarianLib
An extensive collection of tools, utilities, and frameworks.
Iris/Oculus & GeckoLib Compat (Deprecated)
ONLY WORKS FOR OLDER VERSIONS - Fixes GeckoLib animations not working if using a shaderpack with entity shadows.
mutil
Data management, network utilities and hierarchical view rendering for minecraft
FTB Quests (Fabric)
FTB Quests is a lightweight, team-based questing mod and is very simple to use. (Fabric version)
YUNG's API (NeoForge) [1.20.4-1.21.1 ONLY]
A library mod for some of YUNG's Minecraft mods