Mods for Minecraft Java
Browse 1,264 free mods for Minecraft Java — popular picks include XNet, Temporal API, Alternate Current.
Step by step: How to install Minecraft Java mods & modpacks
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XNet
XNet is a highly optimized networking cable system for items, energy, fluids, information, ...
Temporal API
Temporal API is the library for Team Temporal mods, other projects may use it as well.
Alternate Current
An efficient and non-locational redstone dust implementation
Only Bottle Caps
This mod adds only Bottle Caps into Cobblemon
Create Cobblestone
Adds a block generating cobblestone using SU, stopping cobblestone generators from eating your frames.
Animal Pens
Reduce lag and keep your animals neatly stored while maintaining full interactivity!
XP Synthesiser
A mod that allows you to synthesise XP from power
Smart Particles
A performance mod that greatly optimizes particle rendering and particle limits.
LC²H [Lost Cities: Multithreaded]
LC²H V3 turbocharges The Lost Cities to massive cities, lightning-fast, silky smooth gameplay. Fully C²ME compatible. I’m proud of this, and hope everyone will enjoy using it :]
Jauml
Jauml is a lightweight configuration library for Minecraft mods, designed to simplify JSON-based config management

Simple Datapacks
Simplifying the use of datapacks
Pipez Lag Fix
Adds eco mode to item pipez to improve performance
Quantified API
A high-performance API for Minecraft mods, built to handle tasks efficiently, reduce lag, use GPU acceleration, smart caching, and multithreading - keeping your game smooth and stable.
ResourcePackCached
Keeps server resource packs loaded, so they don't need to be reloaded when you rejoin.
HU: Harium
A general-purpose optimization mod that rewrites inefficient vanilla code for AI, redstone, entities, hoppers, and physics without changing game behavior
Consumable Optimizer
Handles eating client-side, ensuring servers don't slow down the eating process
NoRollback
Remove (annoying) rollbacks
CobbleBoss
A mod that allows you to infinitely add and customize your own exclusive Bosses in the Cobblemon world.
Multi Key Bindings
Allows players to create multiple keybindings for the same action/function.
Create: Smart Bounds
Improves create mod's block entity renderbounds
Carpet AMS Addition
A fabric-carpet extension mod. It offers some interesting and useful features.
RPMTW Platform
The mod integrated with RPMTW services covers translation, wiki, universe chat, Chinese input optimization, and other features for Minecraft players to get a better gaming experience.
ZeroCore
A mod intended for other mod authors, it contains a revised multiblock API that support multiple client mods without performance penalities, a new new GUI system, a base BlockEntity implementation that simplifiy data syncronization and much more.

RS Integration
A major core optimization release featuring improved recursive crafting scheduling, recipe-index warm-up, safer transaction settlement, rewritten pinyin search, and optional Project MMO salvage integration.
Voxy Server Side
Render distant Voxy LODs on servers
ClickCrystals
Crystal PvP tweaks client mod. Your ultimate cpvp assistance. Various tweaks that improve your performance without ruining the cpvp experience.
Create: Deployer API
A create library for addon-developers to simplify logistics
Photonics: A raytracing engine
A ray-traced voxel engine with a focus on performance and crisp shadows
PowerRanks
Rank-based permission manager for servers.
Load My Chunks
A Server Friendly Chunk Loading Mod

Heartistica
The most optimized player health indicator mod, built for maximum performance and minimal FPS impact. Hearts+
AudioThrottle
Improves the Minecraft sound engine for better performance
FPS Boost
FPS Boost offers you to improve the performance and stability of your game, and also adds some options such as zooming and reducing FPS during a certain inactivity to save energy.
Iron Furnaces Enhanced
A fork of the original Iron Furnaces mod — with extra languages, fixes, and performance improvements. Built on top of the original work by cpw, Qelifern and XenoMustache.
Highlighter
Highlights items in your inventory different colors depending on their enchantments and types.
HE: HariEntity
A parallel entity processing engine that distributes entity ticking and mob spawning across multiple CPU threads to reduce main thread load