Minecraft Java 1.21 Mods
Browse 129,818 free mods for Minecraft Java 1.21 — popular picks include Breeze Do Damage, unsign's better vanilla, Item Bank.
Step by step: How to install Minecraft Java mods & modpacks
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Breeze Do Damage
Makes Breeze do a bit of damage when they land a direct hit
unsign's better vanilla
A small modpack that consist some of perfomance, quality and QoL mods
Item Bank
A item bank plugin
Lymecraft Survival
This is the official pack for all VANILLA Lymecraft servers. Optimisations and such for it.
CorvusTPA
A simple yet powerful teleportation plugin for your server.
Clarity GUI
This resource pack remove GUI background like vanilla. support version:1.20~1.20.1/1.20.2+
Paper Asylum
Adds several items from Item Asylum (Roblox) to Minecraft.
Step and Get
Step on a block and get the block.
Memory Usage Display
This simple Fabric mod displays the amount of RAM being used, in Minecraft's action-bar (toggleable).

Better Netherite Upgrading Reloaded
A Spigot plugin to adjust Netherite upgrading cost based on item type.

ScaleSpawn
This add-on will make the selected entities spawn with random sizes using the scale attribute, also, you will be able to set custom damage, speed, life and drops according to the size.
RealTime [Weather too]
Want your worlds to sync with Real Time and Weather?
Player Enhancers
Player Enhancers add shards that enhance the player making them stronger for the sacrifice of their hotbar slot.
PIN Safe
The plugin that adds storage and uses a PIN code for security.
RG Quality of life
Adds useful features, improves the interface and makes the game prettier without losing optimization, while keeping the vanilla style.
JWhitelist
JWhitelist - simple plugin for the whitelist. Stores data in mysql or sqlite. Allows you to add a player for a while. There is a command to remove players who have not logged on to the server for a certain time.
Better Poison hearts
This pack basically makes poison hearts green to differentiate it from absorption hearts
Door Boats
boats are now doors
Notty
Convert a MIDI formatted file into a playable Minecraft Song!
Matcha GUI Tweaks
A few gui tweaks for Matcha Flavoured
Expression: Community
Expression: Community adds community suggested content to the Expression mod!
Backrooms Movie OST
adds the backrooms movie ost to minecraft... with some bonus songs...

Simple BetterHUD
BetterHUD: Simple customizable HUD which you can drag anywhere onto your screen.
Sling
Adds the Sling, loosely based on Doctor Strange's Sling Ring for Portal Travel
Easy duels
A powerful Paper PvP duels plugin featuring GUI-based duels, customizable arenas, automatic arena reset, PvP Club-style death system, parties, scoreboards, multiple kits, best-of rounds, and fully configurable gameplay for competitive servers.
Fraktu_'s CPvP Essentials
A full pink-themed CPvP visibility pack, muted particles and fire, a tiny totem pop, and a pink-recolored diamond/netherite kit (armor, tools, bow, crossbow, anchor) that stays easy to tell apart at a glance.
Create Aeronautics Mods
Create Aeronautics and More... It Includes many Create Addons including Create Aeronautics as the Core Mod.
DonutMotd
This is a simple plugin which is a fully customisable motd supported with minimessage api and hex.
Slimebois
A Create Aeronautics modpack — build flying ships, automate everything, and explore with friends on NeoForge 1.21.1.
HL2 Resistance Crossbow Replacement
This resource pack replaces the standard Minecraft crossbow with the Resistance Crossbow from Half-Life 2. It has an alternative scope-less version as well
Create Aeronautics Basics
With A Booming Use of Physics This Modpack Is Just The Basics For Your Next Adventure...
Lots of Food Revived
This is an unofficial 1.21.1 port of the Lots of Food mod
WanderLust: Nixion
Explore Nixion's moon: A world in orbit around another world with tons of biomes. (for immersion I recomend keeping the shader on but you can take it off if you want to)
RxNoBots
The best plugin for eliminating bots in Velocity using LimboAPI
Literally Bed-Rock
Literally Bed-Rock.
MoreActions
MoreActions is a plugin that enhances player movement with new mechanics like prone crawling and wall climbing.