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Minecraft Java 1.21 Mods

Browse 3,588 free mods for Minecraft Java 1.21 — popular picks include TritiumConfiguration, VS Unofficial Neoforge Port, Abstract Operations.

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TritiumConfiguration
1.21fabric

TritiumConfiguration

A lightweight configuration library for multi-mod-loader platforms with multi-MC-version support, designed for new developers and those who want to streamline their workflow.

10kdownloads
VS Unofficial Neoforge Port
1.21.1neoforge

VS Unofficial Neoforge Port

An unofficial NeoForge port of the Valkyrien Skies 2 physics engine to Minecraft 1.21.1.

10kdownloads
Abstract Operations
1.21fabric

Abstract Operations

Json <-> NBT interchange library

10kdownloads
Iskandert's Library
1.21.1neoforge

Iskandert's Library

A library of functions used primarily by Iskandert's Team mods

10kdownloads
Rage Mod
1.18.2forge

Rage Mod

Add "Rage" to entities. Get damage bonus on full rage.

10kdownloads
ValorlessUtils [1.18-26.2]
1.21spigot

ValorlessUtils [1.18-26.2]

Utility library for easier plugin development.

10kdownloads
GrieferGames CustomBlocks
1.21.4forge

GrieferGames CustomBlocks

Customblocks for GrieferGames and Bausucht Citybuild Server

10kdownloads
SimpleCloud API Plugin
1.20

SimpleCloud API Plugin

This Project aims to provide very easy API access for all SimpleCloud APIs

10kdownloads
Version't
1.17fabric

Version't

A powerful java reflection layer and toolchain targeted at multi-version Minecraft Fabric modding

10kdownloads
Jsonate
1.16.5forge

Jsonate

Jsonate simplifies Minecraft mod configuration with a lightweight JSON API, automating versioning, file handling, and type-safe data access for Forge developers.

9.9kdownloads
Burning Block
1.21.1neoforge

Burning Block

The mod that makes fire mechanics more believable!

9.9kdownloads
CAWEZ'S Mantle to Stratus
1.21.1neoforge

CAWEZ'S Mantle to Stratus

A vertical expansion to Minecraft adding 3 new dimensions both above and below the Overworld, with many sights to see and challenges to overcome.

9.9kdownloads
Vivecraft Spigot Extension
1.8.8

Vivecraft Spigot Extension

Adds support for Vivecraft on Spigot/Paper/Folia based servers

9.8kdownloads
AriKeys
1.21.3fabric

AriKeys

AriKeys is a client-side mod for Minecraft, which allows your client to receive and send keypresses between servers using the AriKeys plugin.

9.8kdownloads
Burning Block TFC
1.21.1neoforge

Burning Block TFC

TFC compat for the mod that makes fire mechanics more believable!

9.8kdownloads
Bobo Lib
1.21.1neoforge

Bobo Lib

A library mod for Bobophones mods

9.7kdownloads
Matthiesen Core
1.21.1neoforge

Matthiesen Core

A library mod for NeoForge and Fabric that enables developers to create mods with a shared common codebase.

9.6kdownloads
Mowzie's Mobs definitive [Mutant Monsters Compat]
1.21.1neoforge

Mowzie's Mobs definitive [Mutant Monsters Compat]

This is a mod for a modpack called Mowzie's Mobs that will add compatibility for Mutant Monsters. It will include changing the mutant zombie model to geckolib, making it easy to modify the animations and model with Kube.js or resource packs.

9.6kdownloads
Quark Zeta Fixin
1.20.1forge

Quark Zeta Fixin

Fixes a race condition in Zeta, the library for Quark, that occurs when too many addons are installed

9.6kdownloads
Wynnic Enchantments Helper
1.21.11fabric

Wynnic Enchantments Helper

A helper mod for Wynnic Enchantments modpack

9.6kdownloads
SLM: Elements
1.20.1forge

SLM: Elements

Add an advanced elemental and elemental damage system, with direct, inverse, and static interactions and more!

9.5kdownloads
Spear Core
1.21.1neoforge

Spear Core

A lightweight library mod that provides a complete spear weapon system for Minecraft 1.21.1 NeoForge.

9.4kdownloads
SDM Loot Stages
1.21.1neoforge

SDM Loot Stages

Create a step-by-step progression for loot tables!

9.3kdownloads
Wilderness Odyssey API
1.21.1neoforge

Wilderness Odyssey API

this is a mod made for the modpack wilderness odessy. it has lots of tools and things in it. and others can use it too

9.3kdownloads
HZLib
1.21.1neoforge

HZLib

The shared library powering all Heria Zone mods. Provides the multi-loader entity framework, variant system, animation profiles, and platform services that every Heria Zone mod is built on.

9.3kdownloads
easierworldcreator
1.21.1neoforge

easierworldcreator

library mod that help you creating features by generating 3d shapes

9.3kdownloads
Radioactive
1.21.1neoforge

Radioactive

Unified radiation for modpacks and servers.

9.3kdownloads
KubeJS Create Automation
1.21.1neoforge

KubeJS Create Automation

An automation hook mod that bridges Create machines with KubeJS, allowing pack makers to intercept and customize automated actions through scripts.

9.1kdownloads
Ashen Legion
1.21fabric

Ashen Legion

Legion/Horde encounters, Data Driven!

9.1kdownloads
BetterConfig
1.21

BetterConfig

A very powerful and easy to use command based configuration library for servers and clients.

9.0kdownloads
Spark Core
1.21.1neoforge

Spark Core

A lib mod with rigid body physics, bedrock version of animation loader, state machine and other useful content.

9.0kdownloads
NovaCoreTempFix-421856
1.21.1neoforge

NovaCoreTempFix-421856

Temporary fixed updates for NovaCore only for 1.21.1

9.0kdownloads
AcornLib
1.21fabric

AcornLib

An API with features to make modding easier, including new Components, Particles, Weapon Skins, and Supporter Perks.

9.0kdownloads
MapEngine
1.20

MapEngine

MapEngine is a map library plugin for minecraft paper servers, used to show images and video/streaming on maps

8.9kdownloads
Middle-Earth Additions: Factions
1.21.8fabric

Middle-Earth Additions: Factions

A powerful addon for the Middle-Earth mod that provides seamless integration with PlaceholderAPI

8.9kdownloads
CitFancy
1.21.3fabric

CitFancy

Enable OptiFine CIT textures on Fabric using Fabric API

8.9kdownloads