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Minecraft Java 1.21 Mods

Browse 3,587 free mods for Minecraft Java 1.21 — popular picks include CobbleFight, EconGuard, Flame Announcer.

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CobbleFight
1.21.1fabric

CobbleFight

A dedicated ELO Battle system for Cobblemon

19downloads
EconGuard
1.21

EconGuard

A shared economy audit ledger and anti-abuse / RMT-detection core. RoyalBank, RoyalAuctions, and RoyalBazaar report to it automatically, correlating money movements across banking, auctions, and the bazaar in one place. Free public API for any plugin.

19downloads
Flame Announcer
1.21

Flame Announcer

A powerful and highly customizable announcement plugin featuring scheduled Chat, BossBar, and Interactive clickable messages with full in-game management.

19downloads
Relocation
1.21

Relocation

A simple building relocation plugin

19downloads
Zurtrutium Lib
1.21.5fabric

Zurtrutium Lib

Common Library for Zurtrutium Modding

19downloads
SpigotX
1.19spigot

SpigotX

A flexible Java library for creating Spigot/Bukkit plugins with GUI, commands, and event handling.

19downloads
Craftels API
1.21.1neoforge

Craftels API

This mod is an API for Project zomboid like "Craftels" (Moodles)

18downloads
Maykesh's Server Observability Framework
1.21fabric

Maykesh's Server Observability Framework

A comprehensive server observability framework for Minecraft 1.21. Monitor tick timings, entity updates, chunk loading, network packets, and more with minimal overhead. Perfect for debugging, optimization, and rate-limiting systems.

17downloads
PermsCraft
1.21

PermsCraft

Minecraft Advanced Permission plugin

17downloads
PluginListPlus
1.21

PluginListPlus

A more readable plugin list with customizable aesthetic themes and styles.

17downloads
UltraTrackStats
1.21.4

UltraTrackStats

UltraTrackStats is a Bukkit/Spigot plugin that provides a centralized player statistics tracking system (kills, blocks, and more) accessible by any plugin via a simple public API.

17downloads
Aevum
1.20

Aevum

Create, manage, and track timers with ease. ⌛

16downloads
Vincible Moon Datapack
1.21

Vincible Moon Datapack

Dependency for upcoming update 2.0 of The Vincible plugin, planned to be optional

16downloads
VanillaTweaker » Small changes, big improvements!
1.20.6spigot

VanillaTweaker » Small changes, big improvements!

Qulaity of life tweaks for an improved vanilla experience.

15downloads
Kore: Kotlin framework
1.21.10neoforge

Kore: Kotlin framework

A modding framework to enhance your Kotlin modding experience. Create mods the Kotlin-way!

15downloads
HikariLib
1.20

HikariLib

A Utils Library for Minecraft Paper/Folia Plugin Developing.

15downloads
RPGItemTweaksDefaultComponents
1.21fabric

RPGItemTweaksDefaultComponents

This is a rider datapack specificly for default components mod, rebalancing the RPG series mods and the ice and fire dragonsteel weapons, for my combat modpack.

14downloads
Metrognome
1.21.11fabric

Metrognome

Plays MIDI files on the in-game instruments from the Instruments spigot plugin by Cup0fCode. Pick a .mid, adjust it until it sounds right, then save it to a library you can play from later.

14downloads
Custom Collision Box
1.21.2

Custom Collision Box

A datapack library that can create custom collision/interaction box with management.

14downloads
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!

14downloads
Modern Industrialization Multiblock Editor
1.21.1neoforge

Modern Industrialization Multiblock Editor

Customize Modern Industrialization multiblocks with KubeJS

13downloads
VanillaCommandPlus
1.21

VanillaCommandPlus

Flexible replacement for vanilla /gamemode and /tp: per-parameter permissions, customizable aliases, and MiniMessage messages, with Paper/Folia support and a public API.

13downloads
Craftable Golden Enchanted Apples
1.21.8

Craftable Golden Enchanted Apples

This Datapack adds recipies for Golden Enchanted Apples.

13downloads
⭐ ZenithCore ⭐ | The Ultimate Framework for Paper Servers | Quest • GUI • API • Hooks
1.21spigot

⭐ ZenithCore ⭐ | The Ultimate Framework for Paper Servers | Quest • GUI • API • Hooks

Modern all-in-one framework for Paper 1.21+ featuring modular systems, powerful API, plugin hooks an

12downloads
CognitiveReinforcementAndExistentialValidationFramework
1.20.6spigot

CognitiveReinforcementAndExistentialValidationFramework

Scientifically maximizes player self-esteem using procedural gradients and hyperbolic affirmations.

12downloads
WorldScript [1.12.2-1.21.8] | ️RPG Region Framework | ⚡Dynamic Events & Player Progression⚡
1.12spigot

WorldScript [1.12.2-1.21.8] | ️RPG Region Framework | ⚡Dynamic Events & Player Progression⚡

Open-world RPG region events and scripting for Paper servers..

11downloads
WMR(Wasabi Mine Regenerator)
1.21

WMR(Wasabi Mine Regenerator)

A lightweight multi-language Minecraft plugin that regenerates mine blocks interactively. Supports 1.21.4

10downloads
Vincible Moon
1.21.1

Vincible Moon

Dependency for update 2.0.0

10downloads
Loremaster
1.21neoforge

Loremaster

The Loremaster in his Library will give guide books you can borrow.

9downloads
WSXPay
1.18.2

WSXPay

Integrate real-world payments into WebShopX

9downloads
XaraLib
1.21spigot

XaraLib

A Library Plugin, For Other Plugins That Require This.

8downloads
Various Sable Weights
1.21

Various Sable Weights

Just added Weights for Sable by tags and then mod specifics. made it for myself and just throught I'd share.

7downloads
Cratty
1.21.5

Cratty

Adds an Pixel Icon Library to Minecraft

7downloads
Aura Nexuses
1.21.11

Aura Nexuses

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

7downloads
Portable API
1.21.1neoforge

Portable API

Portable API is a cross-version, cross-loader Minecraft modding API that lets developers share common code across multiple Minecraft versions and mod loaders.

6downloads
ModularRarity
1.21.1neoforge

ModularRarity

a ModularShoot × RarityCore integration mod

5downloads