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Minecraft Java 1.21 Mods

Browse 3,577 free mods for Minecraft Java 1.21 — popular picks include Just Enough Advancements (JEA), GeckolibBetterFPS, Inline.

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Just Enough Advancements (JEA)
1.21.1neoforge

Just Enough Advancements (JEA)

An addon for JEI which let you search for advancements. This is pronounced like "yeah".

1.6Mdownloads
GeckolibBetterFPS
1.21.1neoforge

GeckolibBetterFPS

25% faster rendering Geckolib entities

1.6Mdownloads
Inline
1.21.1neoforge

Inline

a mod for inline text rendering

1.6Mdownloads
SDM  Economy [Forge/Fabric]
1.21.1neoforge

SDM Economy [Forge/Fabric]

A library for creating and managing currencies

1.6Mdownloads
Kev's Library
1.21.1fabric

Kev's Library

A library for Kev's mods

1.5Mdownloads
Lazr's Lib
1.20.1forge

Lazr's Lib

A library containing many utilities for Lazr's Mods.

1.5Mdownloads
Hotai
1.21.9neoforge

Hotai

Patch mods with external files for modern version

1.5Mdownloads
BjornLib
1.20.1forge

BjornLib

A library of generic code for my mods

1.5Mdownloads
Sparkweave Engine
1.21.1fabric

Sparkweave Engine

Library to share code and functionality between projects

1.4Mdownloads
Preloading Tricks
1.21.8fabric

Preloading Tricks

A developer tool for early loader access, class transformation, and preloading hacks.

1.4Mdownloads
CobbleGen [Fabric/(Neo)Forge]
1.19.3fabric

CobbleGen [Fabric/(Neo)Forge]

Customize (and randomize) cobblestone generators

1.4Mdownloads
MC VR API
1.21.8neoforge

MC VR API

An API that allows mods to interoperate with Vivecraft

1.4Mdownloads
Jauml
1.21.11neoforge

Jauml

Jauml is a lightweight configuration library for Minecraft mods, designed to simplify JSON-based config management

1.4Mdownloads
ShetiPhianCore [Fabric]
1.21.1fabric

ShetiPhianCore [Fabric]

Required for ShetiPhians Fabric Mods

1.4Mdownloads
GeckoJS
1.21.1neoforge

GeckoJS

Use Geckolib to create animatable block/item/armor by KubeJS

1.4Mdownloads
Additional Placements
1.21.11neoforge

Additional Placements

Additional placement states for many blocks, including vertical slabs and stairs

1.4Mdownloads
Expanded Combat
1.21.1neoforge

Expanded Combat

An expansion to how you battle

1.4Mdownloads
Ponderer - 思索者
1.21.1fabric

Ponderer - 思索者

Ponderer is an in-game Ponder authoring tool for players and modpack creators. You can build, edit, and iterate tutorial scenes directly in Minecraft without leaving the game or writing scripts first.

1.3Mdownloads
Cosmos Library
1.21.1neoforge

Cosmos Library

Main required library for all TheCosmicNebula_ mods.

1.3Mdownloads
Fluid Tick Structure Processor
1.20.1forge

Fluid Tick Structure Processor

Add structure processor to tick the fluid in the structure.

1.3Mdownloads
Distant Horizons API
1.12.2fabric

Distant Horizons API

Don't Download Unless You Are A Developer. This is automatically included in the DH mod jar.

1.3Mdownloads
Quantified API
1.20.1fabric

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.

1.3Mdownloads
HeroBot
1.21.11fabric

HeroBot

Framework for fabric based server side players (and extra helpful settings)

1.3Mdownloads
Discord Integration Forge
1.21.11neoforge

Discord Integration Forge

Click for other loaders. This mod links your server chat with a channel on your discord server.

1.3Mdownloads
Ace's Spell Utils
1.21.1neoforge

Ace's Spell Utils

An util API for making Iron's Spells and Spellbooks addons

1.3Mdownloads
ColorBlindness
1.21.4forge

ColorBlindness

Potion effects that simulate color blindness (Forge, NeoForge, Fabric, Quilt)

1.3Mdownloads
Translucency Fix
1.21neoforge

Translucency Fix

Because Mojang doesn't want to

1.2Mdownloads
UI Lib
1.21neoforge

UI Lib

A user interface library for Minecraft modding.

1.2Mdownloads
Minecord (for Discord)
1.21.11fabric

Minecord (for Discord)

Bring your Minecraft world into your Discord guild

1.2Mdownloads
Mythic Compat
1.21fabric

Mythic Compat

A small library mod to add recipe compatibilities for Mythic Upgrades.

1.2Mdownloads
Untitled Duck Mod (Fabric)
1.21.1fabric

Untitled Duck Mod (Fabric)

Ducks for Forge and Fabric! Powered by geckolib and architectury.

1.2Mdownloads
PlayerAbilityLib
1.21.6fabric

PlayerAbilityLib

Your good pal, fixing ability incompatibilities

1.2Mdownloads
Quilt Kotlin Libraries (QKL)
1.21quilt

Quilt Kotlin Libraries (QKL)

Quilt's official Kotlin libraries

1.2Mdownloads
Immersive Vehicles Trin Part Pack
1.20.1forge

Immersive Vehicles Trin Part Pack

Trin Part Pack - the full part collection

1.2Mdownloads
Villager API
1.21.11neoforge

Villager API

An API to add custom villager professions and villager biome types with custom trades without writing code.

1.2Mdownloads
Attribute Setter
1.21.1neoforge

Attribute Setter

A lightweight mod that changes entities' and items' default attributes through datapacks

1.2Mdownloads