Minecraft Java 1.21 Mods
Browse 3,587 free mods for Minecraft Java 1.21 — popular picks include RefineryCore, NzxterMOTD, Easy Trading Russificator [РУС].
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RefineryCore
A modern Paper plugin framework providing annotation-driven commands, GUIs, and configuration — built for the Refinery Team.
NzxterMOTD
This is the best and most perfect motd system for Bukkit
![Easy Trading Russificator [РУС]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/154642.webp)
Easy Trading Russificator [РУС]
Official Russian language pack for Easy Trading Plugin. Allows you to change the plugin's system language to Russian.
EssentialsExpertAIO
EssentialsExpert is a high-performance, modular core suite for Paper 1.21.1 that consolidates essential server management, player utilities, and economy features into a single, highly customizable framework.
API-GeneratorColor
A tool designed to generate and convert color values in HEX format.
Log4MC
A logger for Minecraft Datapacks
GideonLobby
A modern and modular lobby framework built for Paper servers.
PostgreSQL JDBC
PostgreSQL JDBC driver packaged for use as an external library or optional dependency for Spigot/Paper plugins.
xzutils
Useful and obscure. Provides enchantment reformatting for data manipulation.
Better Recipe & Smelts
Better Recipe & Smelts is a quality-of-life datapack designed to expand and rebalance Minecraft’s crafting and smelting systems in a way that feels logical, intuitive, and faithful to vanilla gameplay
ALYBH-RE PVP-Lite
PVP visual modify, an additional part of ALYBH-RE, also could be used without any dependency.
CustomItemBars Lib
This mod allows you to add additional colored bars to any item
BakaCraft
Did you ever want to lookup a random manga or light novel while playing Minecraft? No? Alright... Welp, now you can!
MapCycle
MapCycle makes managing rotating FFA maps simple by handling everything automatically while keeping full control available for administrators.
More items for furnace
Would you like more items to smelt in your furnace so you can smelt more items?
DialogAuthVelocity
Velocity addon for DialogAuth for premium accounts support
SpongeAPI
Sponged API is a plugin that allows sponge plugins on regular plugin loaders.
Silver's Percentage Library
Just a small library for value to percentage transformation.
Datapacks Menu
Inspired by the ModMenu mod but for datapacks..
Plugin Manager Plus
A lightweight and powerful tool that allows server administrators to load, unload, reload, enable, and disable Minecraft plugins dynamically at runtime without restarting the server.
Spell Renderer
A fast, lightweight OpenGL wrapper for Minecraft, designed for rendering 2D objects with a clean, fluent API.
Lumo (FREE) | KI-Chat mit Groq API (LLM) | Multilingual | Bossbar | Logging
ChatBot | KI-Chat | Lumo | Multilingual
CC: Wasm (Unofficial port)
Adding Wasm to CC: Tweaked (1.21.1 NeoForge port)
Ponder Datapack Resourcepack
Resourcepack dependency for Ponder Datapack
Numbers
You can use this calculation to calculate /scoreboard players operations player scoreboard /= 2 Operations, or any other numbers.
Name Forging
Generate natural-sounding names with grammar-aware dictionaries and full resource pack support. Client-side only.
Staminafy
Adds a simple stamina system to Minecraft.
XzCore
Shared infrastructure foundation for the XzPlugin suite. It provides common services that other plugins can depend on
CommandLib
Modern command framework for Minecraft plugins designed to simplify the creation and management of commands in recent Minecraft versions.
ephemeral_beacon by only5117 1.21x
Ephemeral Beacon is a rare block that cosmetically transforms neutral mobs within a 50 block radius over three in-game days. It creates permanent unique color variations like lavender sheep or gold striped pigs adding subtle magic to your world.
Modins
Modins is a mod for mod development; it copies mods currently loaded in Fabric memory. This helps identify which mod might be causing crashes, allowing you to fix the issue or submit a report to the mod creator.
Tom's Loot (Dp Edition)
This datapack adds a variety of loot tables and can be used by other mod developers for structure mods and other mods with loot tables as a basis. Datapack Edition
KKAiHelper
AI Customer Support | Typewriter Effect | Agent Auto Rules
Warez Protect
Safeguard your server like never before with simple plugin for Bukkit, Spigot, and Paper! Instantly detect alts and find/block players trying to join as someone else - stop unfair kills and theft! All that without anoying passwords and logins!
KFramework
Lightweight Kotlin framework for Paper plugin development
Aftermath 4
This a datapack that adds new features to your game, like crafts and some structures!