Mods for Minecraft Java
Browse 8,879 free mods for Minecraft Java — popular picks include NyaLib, MythLib, BossTools Performance.
Step by step: How to install Minecraft Java mods & modpacks
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NyaLib
A pretty UwU library mod providing Energy/Item/Fluid API, block networking, block templates, capabilities and more
MythLib
Cross-Platform library for minecraft mod development.
BossTools Performance
Performance optimizations for extremely questionable Space-BossTools code
FLib-Unofficial port
An unofficial port to 1.21.1 for the FLib mod; will remain until the original creator Lothrazar hasn't finished porting
YoinkGui
A fabric mod that allows u to copy a gui via the nbt of the item and parse the nbt into a copyable format!
CubesideUtilsFabricClient
Some utilities for fabric client mods
NewCommands
better, faster, more flexible
ColorableLib
SuperbWarfare library for easy vehicle coloring.
CC: WATERMeDIA
Small mod to control WATERMeDIA Frames using computers
LuckyUtils
Utility Mod for LuckyBlocks by the LuckyCrew or LuckyBlocks in general
Lazr's Lib Ported
A ported library containing utilities for ported Lazr's Mods.
Thunderbolt_lib
A runtime bridge library and addon API for AE2 Lightning Tech, providing lightning energy capability interfaces, recipe builders, and plugin loading support for addon mods.
SVVideo
SVVideo is a powerful Fabric mod for Minecraft 1.21.1 that lets you play videos, music, GIFs, and media directly inside the game. Perfect for events, cinematics, and immersive servers.
Create OBB Collision Crash Fix
Fixes a server crash in Create 6.0.10 caused by a NullPointerException in contraption collision code (ContinuousOBBCollider.collideMany).
Create New Age NBT Tag Fix
Add NBT Forge Ore Tags to Create New Age Blocks, (Allows profiling in JEARGH)
Registry Library
this is a mod library used for making mods clean and simple with the coding part you will not have to create any custom methods for registering Happy Modding
Tooltip Tweaker
Crafttweaker addon to control tooltips better.
Craft It All!!
A mod that adds tons of new crafting recipies for some unobtainable blocks or some uncraftable ones
ScoreboardLib
A flicker-free scoreboard library with support of text up to 48 characters.
CloudWorks API
CloudWorks API is an open-source private API for DrownedCloud's mods. Provide developers with some useful features.

IXApi
This mod added a good lib to minecraft

Fubric API
Fubric API lowers your fps :D
Create: Kryeit
Library bringing some Create mod Events
Draventh Ores
⚒ Advanced Tier Ores & Equipment This mod expands Minecraft’s survival progression by introducing 15 new late-game materials, each with full armor and tool sets. The goal of this mod is simple: Extend progression beyond Diamond and Netherite with a struc
Basemod
Base Mod for the TiCh Immersion Modpack
Under Control
Library with many utilities.
Modular Machinery (Cryogenic Simulation Edition)
A fork of Modular Machinery. The only change is how fluids are rendered in JEI. Primarily for use in Cryogenic Simulation modpack, but can of course be added to any pack.
Data Criteria
Data-driven advancement criteria
Entity Health Display
Fabric server-side library mod for displaying entities' health.
Tree Lib
A library mod for all things related to the immersive series!
Duck Core
Library for my mods.
DynastyEconomy
An advanced economy plugin (Bukkit/Spigot, BungeeCord & more)
Fabric Polyfill
Backport of Fabric API events
Just For Me Until You (JFMUY)
A recipe viewer fork form JEI, built to learn UI rendering, item indexing, and recipe mapping.
Polymer Font Utils
API for generating font files
PowerBoard
Minecraft plugin for Scoreboard, Tablist, Prefixes, Suffixes, Chat | Animated