Mods for Minecraft Java
Browse 229,052 free mods for Minecraft Java — popular picks include Cloth Config API (Fabric/Forge/NeoForge), Placebo, Curios API.
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Cloth Config API (Fabric/Forge/NeoForge)
Config Screen API for Minecraft
Placebo
A library mod
Curios API
A flexible and expandable accessory/equipment API for users and developers.
Fabric API
Lightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
FTB Library (NeoForge)
Common code for all GUI stuff in FTB Mods
Storage Drawers
Interactive compartment storage for your workshops.
Mantle
Shared code for Forge mods
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!
Polymorph (Fabric/Forge/Quilt)
No more recipe conflicts! Adds an option to choose the crafting result if more than one is available.
FerriteCore ((Neo)Forge)
Memory usage optimizations
FTB Quests (NeoForge)
Questing Mod by FTB
Sodium
A high-performance rendering engine replacement for Minecraft, which greatly improves frame rates and reduces micro-stutter.
FTB Teams (NeoForge)
Library for mods that can utilize team progression
CoFH Core
Contains Core Functionality for all Team CoFH mods. Also does some really cool stuff on its own!
The Twilight Forest
A realm basked in mystery and eerie twilight, you will overpower terrifying creatures and secure the adventure of a lifetime; in the Twilight Forest.
ConnectedTexturesMod
A resource pack extension library
Cupboard
Cupboard provides code, frameworks, and utilities for minecraft mods
Cosmetic Armor Reworked
This mod allows you to wear two sets of armor, one for display, one for function.
Cooking for Blockheads
Adds a multiblock kitchen that shows recipes you can make with what ingredients you have available.
CodeChicken Lib 1.8.+
Contains various tools to make modding easier.

Tinkers Construct
Modify all the things, then do it again!
Immersive Engineering
A retro-futuristic tech mod!
Toast Control
Control toasts, those popups in the corner!
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.
McJtyLib
Companion mod for all mods by McJty (RFTools, XNet, Deep Resonance, Not Enough Wands, SignTastic, ...))
FastWorkbench
A performance upgrade for the crafting table.
YUNG's API (Forge/NeoForge)
A library mod for YUNG's Minecraft mods
OpenBlocks Elevator
Port of OpenBlocks Elevator.
Thermal Foundation
The Foundation of a Thermally Expanding World!
Mekanism
High-tech machinery, powerful energy generation, fancy gadgets and more. Now on Curse!
Cucumber Library
A library of shared code and functionality used by my mods.
Botania
An innovative natural magic themed tech mod
Iris Shaders
A modern shader pack loader for Minecraft intended to be compatible with existing OptiFine shader packs
YUNG's Better Mineshafts (Forge/NeoForge)
A long-awaited and much-needed abandoned mineshaft overhaul!
Torchmaster
Adds a special torch which prevents mob spawning in a configurable radius
Aquaculture 2
Spices up fishing with a number of new biome specific fish, recipes, and more!