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Minecraft Java 1.21 Mods

Browse 3,590 free mods for Minecraft Java 1.21 — popular picks include Duck Core, Placeholder API NeoForge, Tweaker Stick (Debug Stick).

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Duck Core
1.21.1neoforge

Duck Core

Library for my mods.

1.9kdownloads
Placeholder API NeoForge
1.21.11neoforge

Placeholder API NeoForge

Unofficial NeoForge port of Patbox's Text Placeholder API

1.9kdownloads
Tweaker Stick (Debug Stick)
1.21.9

Tweaker Stick (Debug Stick)

A working Debug Stick for Survival mode use. ✅ Java REALM Compatible

1.9kdownloads
Entity Health Display
1.21.3fabric

Entity Health Display

Fabric server-side library mod for displaying entities' health.

1.9kdownloads
Improved Enchanting
1.21.11

Improved Enchanting

Definitive Edition v2 for 1.21.11 Just Came out, Come here if you want a vanilla - friendly overhaul of the enchanting system, with new enchantments, and a new enchanting system.

1.9kdownloads
FoxPapiSkriptExpansion
1.21

FoxPapiSkriptExpansion

A placeholder api expansion for Skript to show values of variables and lists, perfect if you use different plugins and you want to show the variable's value in them

1.9kdownloads
Create: Echoes Core
1.21.1neoforge

Create: Echoes Core

Core mod for the modpack Create : Echoes of the Great Derailment

1.9kdownloads
Player HP Display
1.21fabric

Player HP Display

A simple mod that shows the nickname and HP of the player you're looking at requires Fabric API.

1.9kdownloads
Extra Touches
1.21.1neoforge

Extra Touches

A small collection of fun and useful additions to enhance your Minecraft world.

1.9kdownloads
Polymer Font Utils
1.21.4fabric

Polymer Font Utils

API for generating font files

1.9kdownloads
Simple Stations  - Core
1.21.1neoforge

Simple Stations - Core

Core mod for all my simple stations mods

1.9kdownloads
Spawn Egg BYID Redirect
1.19fabric

Spawn Egg BYID Redirect

Needed for same Spawn Egg type compatibility

1.9kdownloads
PowerBoard
1.7.10

PowerBoard

Minecraft plugin for Scoreboard, Tablist, Prefixes, Suffixes, Chat | Animated

1.9kdownloads
Scala3Std
1.7.10fabric

Scala3Std

Universal Minecraft ModLoader Scala 3 Runtime Provider

1.9kdownloads
Money and Sign Shops
1.21.1neoforge

Money and Sign Shops

client-optional economy with money API and sign shops

1.9kdownloads
RankPlugin
1.20.1

RankPlugin

RankPlugin shows player ranks as PNG icons from a resource pack in both chat and the tab list, with easy configuration via ranks.yml, commands, and GUI.

1.9kdownloads
DynastyEconomy
1.21.1forge

DynastyEconomy

An advanced economy plugin (Bukkit/Spigot, BungeeCord & more)

1.8kdownloads
Custom Item API
1.20.6

Custom Item API

An API to make your own custom blocks and custom items.

1.8kdownloads
ACT Bedwars Resource Pack
1.21.11

ACT Bedwars Resource Pack

Dependency of the ACT Bedwars datapack, contains textures & translations required

1.8kdownloads
BeaconAuth
1.20.1forge

BeaconAuth

Secure web, OAuth, and passkey authentication for Minecraft servers using the BeaconAuth mod and a self-hosted auth server.

1.8kdownloads
Enchantment Text Styling
1.21.2fabric

Enchantment Text Styling

Make enchantment's text style be customizable through the use of data. This can be applied to vanilla enchantments and modded enchantments alike!

1.8kdownloads
EnderaLib
1.18.2

EnderaLib

A library plugin for all other Endera plugins

1.8kdownloads
Shaderite
1.21neoforge

Shaderite

NeoForge library to help modders with shader usage

1.8kdownloads
Silver's Datapack Tags Library | DTL
1.21

Silver's Datapack Tags Library | DTL

a Light Weight Datapack used by most of my big projects!

1.8kdownloads
Dark Client
1.21.11fabric

Dark Client

Ever wanted all the perks of a premium client without juggling another launcher? With Custom Client, you get client-side features baked straight into your mods—performance boosts, HUD mods, and quality-of-life tweaks—loaded right alongside Fabric API

1.8kdownloads
Create OBB Collision Crash Fix
1.21.1neoforge

Create OBB Collision Crash Fix

Fixes a server crash in Create 6.0.10 caused by a NullPointerException in contraption collision code (ContinuousOBBCollider.collideMany).

1.8kdownloads
smartbuildLib
1.21.1neoforge

smartbuildLib

Library for Improved construction system (Now supports Create Aero)

1.8kdownloads
Knumber
1.21.5fabric

Knumber

A separate lib for penomior mod, TextParticle System/ Damage Indicator

1.8kdownloads
NModUtils
1.21.5fabric

NModUtils

Provides common code for tnoctua's mods to prevent duplication and memory bloat

1.8kdownloads
Fabridash Resurrected
1.21fabric

Fabridash Resurrected

A dash mod (and a library) for Fabric! Resurrected for newer (and older) versions of Minecraft!

1.8kdownloads
MariesLib
1.21.1neoforge

MariesLib

MariesLib is a shared NeoForge 1.21.1 library powering Marie’s mods. It provides runtime item classification, mod compatibility discovery, registry infrastructure, and developer utilities

1.8kdownloads
Draventh Ores
1.21.8fabric

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

1.8kdownloads
ShadowChat
1.21fabric

ShadowChat

ShadowChat is an all‑in‑one chat, nickname, anti‑spam, tablist, anti-badwords & spychat framework for Fabric 1.21 servers! ( Chat | Tab | PlayerList )

1.8kdownloads
Infinilib
1.21.6

Infinilib

The required library for all Infini-projects.

1.8kdownloads
GoopyUtil
1.21fabric

GoopyUtil

Utility API meant to be paired with FNAF mods. Can also be used as a mod on its own to bring technical FNAF-themed props to the game.

1.8kdownloads
PMW Plus
1.21.1neoforge

PMW Plus

PMW Plus adds helpful new systems to Protomanly's Weather

1.8kdownloads