Minecraft Java 1.21 Mods
Browse 374 free mods for Minecraft Java 1.21 — popular picks include Common Signals, T0PK4_lib, Prism Perms.
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Common Signals
Minecraft datapack library aiming to make in common several selectors to improve optimization
T0PK4_lib
This is a next-generation bugfix mod required for ModderEFGS's and T0PK4's mods to work.
Prism Perms
Cross‑platform permissions plugin for Bukkit, BungeeCord, and Velocity. Lightweight YAML storage, simple commands, and rich stats tools (groups/users, ungrouped/missing/list, names cache) with pagination and safe output chunking.
Easy Bee
A completly new way to trasport bees with extra tweaks
Advanced API
AdvancedAPI provides very simple code, for example, ItemBuilder or SimpleInventory, which can be used to create things faster. ONLY FOR PLUGIN DEVELOPERS
OptiFoundry
Optimize chunks, entities, and ticks
Capix!
A small API mod that allows Mod Developers to add capes to their mods
Visual HUD
A clean, fully customizable client-side HUD overlay for Minecraft 1.21.11 Fabric — shows coordinates, FPS, biome, time, direction, light level, speed, day count, dimension, compass, and FPS sparkline with an in-game config screen.
Mascom (Mass Commands)
Run any command as often as you like AT ONCE and easier than ever before :)
Shuttle
A lightweight open-source addon library for adding extension support to your mods
Easy Freezing
A mod that allows you to Freeze Time around you at will! Try with multiplayer and things get confusing fast!
AbilityItemsAPI
An API to make the creation of items with abilities easier for developers
ExJoin
A plugin for creating unique join and leave messages, with the ability to configure multiple variations for each event.
Tales of the Third Age - Core
Core mod for all Tales of the Third Age Mods!
Polydex2REI-Forked
Converts Polydex recipes to work with REI!
MHDF-Tools
MHDF-Tools | Dream Tools | ✨ A lightweight portable high performance Bukkit base plugin ✨MHDF-Tools | 梦之工具 | ✨一款轻量化便携高性能的Bukkit基础插件✨
Visually Optimized
A collage of vibrant cultures, seasons with the serenity mod, optimisations with sodium and libraries along with inbuilt library to search between and surf through Modrinth from inside Minecraft. Now with a little tweaks in name and other stuff.
ReviveSystem
Revive players after death Special items and mechanics Customizable settings Compatible with Minecraft 1.21–1.21.10 + (- 26.2)
Fix my Enchantments!
This is a light weight that Fixes one crucial feature that is in every one of Silver's Project that contains custom Enchantments
SpawnStash
This is the best and most customizable donut spawnstash plugin out in the wild
RewardsX
Turn Engagement into Rewards
Espoir SMP
The plugin's twist is ⚙️ How the system works: 🧿 You start with 3 souls. 🔻 Each time you die, you lose a soul. 💀 At 0 souls, you become a ghost: spectator mode for 24 hours. ⚔️ Kill a player → you steal one of their souls, if you don't already have all
ISS
This Datapack adds an easy way Save and Load player inventories.
QoL
(1.21.5+), Adds Quality of Life features that everyone needs in their Survival worlds/servers (will also include some of my other datapacks/mods in here)
WebSiteCaptcha
WebsiteCaptcha is a Minecraft server plugin designed to enhance security by requiring players to verify themselves via a web-based CAPTCHA before accessing the main game world or server.
Better Copper Golems
Unleash the true power of copper golems!
ProxyAnalytics
The best way to get info about your players!
CraftEditor
CraftEditor allows server owners to create, edit, and manage Minecraft crafting recipes directly in-game through a simple and intuitive graphical interface, without configuration files or server restarts.
Spawn Shield
This is a plugin that protects the user on spawn!
PyCraft IDE
An in-game Python IDE for Minecraft that allows scripting and interaction with the game through a Python API.
Canalize
Canalize breaks the terrain generation framework of the original Minecraft, offloads the core heightmap calculations down to the C++ layer, and bridges them back to the Java game
Aetheria: Age of Oblivion
This is a Dark Fantasy RPG-style compilation with an emphasis on complex combat, exploration of dangerous dungeons, and magic.
SSaVS MOD
Server Security and voting system - add custom ui (not inventory) and way to PAPER servers block ANY mods/rp in client. Support ONLY for 1.21.4
StringLib
A Minecraft Data Pack library that offers highly optimized implementations for many useful string manipulation utilities.
SkyeNetwork Velocity
The custom velocity plugin used to building SkyeNetwork
RevertRaidChanges-Normal
Restored Raid to the logic before version 1.21.