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Minecraft Java 1.21 Mods

Browse 770 free mods for Minecraft Java 1.21 — popular picks include KotlinScriptLoader, WoodLib, Safe Login.

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KotlinScriptLoader
1.21

KotlinScriptLoader

It’s a script-based project—you can write your own scripts using full-fledged Kotlin! You can even create your own API and build add-ons! It’s got absolutely everything!

15downloads
WoodLib
1.21

WoodLib

A Bukkit PluginLib featuring many usefull things. Builders, Libraries, Utilities and more!

11downloads
Safe Login
1.21.1neoforge

Safe Login

Simple, safe, and efficient login – that's the goal of this module.

9downloads
hLuckyBlock
1.21

hLuckyBlock

Automatic zone-based lucky blocks with weighted types, multi-hit durability, Base64 textures, dynamic TextDisplay holograms, configurable rewards and safe cleanup.

9downloads
Item Limiter
1.21

Item Limiter

Item Limiter gives server owners full control over which items players can use. Set custom limits for specific items or disable them entirely. Players cannot exceed the configured item limits, and disabled items cannot be held by players.

8downloads
Notime
1.8

Notime

A lightweight Minecraft server time management and anti-addiction plugin that supports the Folia server.

8downloads
Aura Nexuses
1.21.11

Aura Nexuses

Grant abilites based on large-scale constructions. Grant permissions dynamically.

8downloads
CracoBan
1.21.2

CracoBan

A lightweight Paper plugin that permanently bans selected Minecraft items from player inventories.

7downloads
Mechanomania Core Mod (1.21.1) – Library for Mechanomania Modpack
1.21.1

Mechanomania Core Mod (1.21.1) – Library for Mechanomania Modpack

Mechanomania Core Mod is the core mod for Mechanomania modpack. It manages internal features and provides improvements that make the modpack run more smoothly and consistently. Features: Mods compat Mod tweaks Vanillia Tweaks Optimizations New Recipe types New advancements New items Mechanomania Core Mod Download Links For Minecraft 1.21.1, 1.21 NeoForge version: Download from Server […]

Chrysalis Mod (1.21.4, 1.21.1) – A Framework to Customize Game Mechanics
1.21.4

Chrysalis Mod (1.21.4, 1.21.1) – A Framework to Customize Game Mechanics

Chrysalis Mod is a library that other mods need to work correctly. You usually only need to install it when another mod lists it as a requirement. This mod provides a shared set of tools and features, like systems for camera shakes, custom music in structures, and a way to pick up mobs in buckets. […]

Ghasts Update Mod (1.21.4, 1.20.1) – Happy Ghosts And More
1.21.4neoforge

Ghasts Update Mod (1.21.4, 1.20.1) – Happy Ghosts And More

Ghasts Update Mod is a mod inspired by the announcement at Minecraft Live March 2025, bringing new features centered around ghasts, including Dried Ghast, Ghastling, and Happy Ghast. Requires Geckolib for versions prior to 1.0.3, and allows players to experience unique mechanics such as raising Ghastling, riding Happy Ghast, and adjusting undrying speed through game […]

Better Bookshelf Resource Pack (1.21.1, 1.20.1) – Texture Pack
1.21.1

Better Bookshelf Resource Pack (1.21.1, 1.20.1) – Texture Pack

Better Bookshelf Resource Pack refreshes Minecraft’s library décor by introducing several stylish bookshelf variations. It adds five new textures to standard and chiseled bookshelves, offering more visual variety and breaking the monotony of identical bookshelves. Perfect for builders and readers alike, this pack subtly enhances immersion and library aesthetics without altering gameplay mechanics or performance. […]

Mechanicals Lib Mod (1.21.1) – Library for Oierbravo's Mods
1.21.1neoforge

Mechanicals Lib Mod (1.21.1) – Library for Oierbravo's Mods

Mechanicals Lib Mod is a library designed for modding, primarily supporting Create addons. It provides essential tools and dependencies for mod developers working within the Create ecosystem. Mechanicals Lib Mod Download Links For Minecraft 1.21.1, 1.21 NeoForge version: Download from Server 1 – Download from Server 2

Radical Cobblemon Trainers API Mod (1.21.1) – Trainer Management System
1.21.1fabric

Radical Cobblemon Trainers API Mod (1.21.1) – Trainer Management System

Radical Cobblemon Trainers API Mod serves as the foundational framework for the Radical Cobblemon Trainers mod and replaces the now-discontinued CobblemonTrainers dependency for Minecraft 1.21 and above. This mod is created to support several features, including trainer management, custom battle mechanics, and advanced AI behavior. Features: Trainer management system with entity association (trainer registry). Support […]

Momentariy Modder' Applications Mod (1.21.1, 1.20.1) – The Heartbeat Of Momentariy Modding
1.21.1neoforge

Momentariy Modder' Applications Mod (1.21.1, 1.20.1) – The Heartbeat Of Momentariy Modding

Momentariy Modder' Applications Mod stands as the foundational core for the suite of Momentariy mods. This essential mod serves as the backbone, providing the necessary framework and functionalities to support the entire Momentariy series. As the central component, it likely lays the groundwork for shared features, mechanics, and interactions that are common across all Momentariy […]

S
1.19.4

SealLib

A library for all of ISeal's plugins!

71kdownloads
C
1.21fabric

Cutscene API

A mod for making cutscenes

7.3kdownloads
V
1.13

Version Detector

An API for datapacks to detect your Minecraft Version

3.9kdownloads
A
1.21

Andrew's Datapack Utils

Useful utilities for datapacks, such as a calculator and allowing player data modification, and more.

2.1kdownloads
D
1.21.6fabric

Disable Click Event Warning

Disables the annoying pop-up added in 25w20a when you just want to click a button that runs an operator/invalid command

1.7kdownloads
A
1.12.2fabric

Android Audio Shim

Enables Simple Voice Chat microphone and speaker on Android (arm64)

1.2kdownloads
L
1.21.8fabric

Lightning Vector & Bounding Box Visualizations

Minecraft Debug Mod that adds commands to render boxes and vectors.

1.1kdownloads
I
1.21.1neoforge

Immersive Portals Compat Patches

Compatibility patches for Immersive Portals.

1.0kdownloads
X
1.7.2

XD's Utils

XD's Utils is a utility plugin that provides backups, a web interface, and more!

691downloads
Q
1.21.1neoforge

QuickWhisper

A terrifying Minecraft horror mod made on NeoForge that adds procedural jumpscares, creepy ambient sounds, and an immersive custom glitch menu.

630downloads
E
1.21.1neoforge

ExtraHitboxes

Add extra hitboxes from geckolib and blockbench

592downloads
P
1.21fabric

Predicator

Empowers predicates to allow administrators to control their players' capabilities

332downloads
G
1.21.6

Gravitation

Easily change the world's gravity

317downloads
A
1.21.1neoforge

AgriCraft Create Compat

Adds harvester support for AgriCraft crops and integrates Create automation with AgriCraft's crop progression and weed mechanics

308downloads
O
1.21.1neoforge

open-hands-lib

Open Hands Lib is a library for Minecraft. Each hand has its own hit cooldown, and the damage and tool are passed through the hand that your mod chooses; the same can be enabled for breaking blocks

259downloads
S
1.21.4fabric

Seva ya Utils

A utility mod for Seva ya Season 6, includes the server shop, milestones and custom currency

222downloads
R
1.21.1neoforge

RevelationaryDimensions

A simple addon to Revelationary which adds support for locking dimensions.

201downloads
D
1.21

Dolphin's SpearSmp plugin

This plugin is a remake of Dolphin's SpearSmp plugin.

142downloads
D
1.21.1fabric

Decrees of the Six

A governance and economy framework: councils of six, decrees, reputation, and player-driven law.

133downloads
P
1.21neoforge

PaleoLib

A simple mod to provide the basis for Paleontology in Minecraft.

102downloads
G
1.13

GUI Command Blocker

GUICommandBlocker Stop players from using commands while they have GUI open! (Specially to prevent mod like ui utilis to sent commands in gui)

71downloads