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
Library for my mods.

Placeholder API NeoForge
Unofficial NeoForge port of Patbox's Text Placeholder API
Tweaker Stick (Debug Stick)
A working Debug Stick for Survival mode use. ✅ Java REALM Compatible
Entity Health Display
Fabric server-side library mod for displaying entities' health.
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.
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
Create: Echoes Core
Core mod for the modpack Create : Echoes of the Great Derailment
Player HP Display
A simple mod that shows the nickname and HP of the player you're looking at requires Fabric API.
Extra Touches
A small collection of fun and useful additions to enhance your Minecraft world.
Polymer Font Utils
API for generating font files
Simple Stations - Core
Core mod for all my simple stations mods
Spawn Egg BYID Redirect
Needed for same Spawn Egg type compatibility
PowerBoard
Minecraft plugin for Scoreboard, Tablist, Prefixes, Suffixes, Chat | Animated
Scala3Std
Universal Minecraft ModLoader Scala 3 Runtime Provider
Money and Sign Shops
client-optional economy with money API and sign shops
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.
DynastyEconomy
An advanced economy plugin (Bukkit/Spigot, BungeeCord & more)
Custom Item API
An API to make your own custom blocks and custom items.
ACT Bedwars Resource Pack
Dependency of the ACT Bedwars datapack, contains textures & translations required
BeaconAuth
Secure web, OAuth, and passkey authentication for Minecraft servers using the BeaconAuth mod and a self-hosted auth server.

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!
EnderaLib
A library plugin for all other Endera plugins
Shaderite
NeoForge library to help modders with shader usage
Silver's Datapack Tags Library | DTL
a Light Weight Datapack used by most of my big projects!
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
Create OBB Collision Crash Fix
Fixes a server crash in Create 6.0.10 caused by a NullPointerException in contraption collision code (ContinuousOBBCollider.collideMany).
smartbuildLib
Library for Improved construction system (Now supports Create Aero)
Knumber
A separate lib for penomior mod, TextParticle System/ Damage Indicator

NModUtils
Provides common code for tnoctua's mods to prevent duplication and memory bloat
Fabridash Resurrected
A dash mod (and a library) for Fabric! Resurrected for newer (and older) versions of Minecraft!
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
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
ShadowChat
ShadowChat is an all‑in‑one chat, nickname, anti‑spam, tablist, anti-badwords & spychat framework for Fabric 1.21 servers! ( Chat | Tab | PlayerList )
Infinilib
The required library for all Infini-projects.
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.
PMW Plus
PMW Plus adds helpful new systems to Protomanly's Weather