Quilt Mods for Minecraft 1.21
Browse 679 free Quilt mods for Minecraft 1.21 — popular picks include Environment Driven Assets, Datamancer, ItaTiers.
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Environment Driven Assets
Environment Driven Assets is a FabricMC mod which implements the env.json library in order to apply it on vanilla asset types.
Datamancer
The must have tool for datapack developers and command block enthusiasts! This mod will accelerate your development process.
ItaTiers
Display tiers from the Official Italian Tierlist
Villager Job Tools
Client-only. Reroll any villager's trades (break/place their job site block) until wanted offers appear. Trades Finder, Auto Buy, Auto Sell. Keybinds: K = menu, R = start/stop.
Late Game Plus (Netherite)
A vanilla-friendly late-game expansion giving Netherite new purposes and upgrades.
Simple End Disable
Disables the End (Prevents going through portals)

Lightning Podoboo
Makes fire created by natural lightning cosmetic, meaning no blocks are destroyed during thunderstorms.
Cursed Spawners
Makes spawners far more dangerous than they need to be.
Northbound
World generation based on realistic latitude-based climate zones!
Better Markets!
Sell Items in a Villager Trading UI & Barter with Other Players!
Tough As Nails Addon
Add additional features to the original Tough As Nalis mod
AIO - Easy upgrade template
Tired of searching for upgrade templates? Just craft it :)
Maximum Protection
Makes all the protection enchantments compatible with each other.
No Bugs
A mod where the maximum number of bugs are fixed
XP Vial
Magical glass bottles that allow you to safely store and retrieve your experience points.
Simple Seasons
Adds a simple season system.
Lava Furnaces
This mod makes furnaces, blast furnaces and smokers burn without needing fuel as long as they have a lava source beneath them.
More Soups Mod
New vanilla-style useful soups with many new effects like lucky block, and country-themed food (from stardew valley, horror mods, terraria and popular brands)

More Search Bars
Add more search bars to various UI screens
Create: Aeronautics/Ultimate Factory Recipe Fix
This datapack fixes a bug in "Create: Ultimate Factory" where the "compat" folder does not work on servers.
Peasy Mode
Pacifies hostile mobs in Easy difficulty
Create: Enhanced Netherite Productions
Automate Netherite! With this data-pack you can build the netherite farm of your dreams!
MaceBu
A fun, PvP-focused mace combat enhancement inspired by YouTuber Wambuu, featuring custom sounds and target highlighting.
No Anvil (Name) Limits
Simple lightweight mod to effectively remove the Anvil rename limit, lifting from 50 to 32767.
Hydraulic Machinery
Turn pistons into industrial machines with hydraulic presses, automation, and configurable vanilla-friendly mechanics.

Copper Age Backport
Make copper more useful with this simple backport mod (Fabric 1.21.1)
Soulmade
Soul-themed weapons and utility items
Crital
Overhaul Crit chance and Crit damage and implementation Monster Crit System (RPG-Like) Archived : Currently rewriting new one
Jump Enchantment
New enchantment that, when applied to boots, increases your jump height!
Dirt to God
This project allows people to turn dirt into the best armour
Granular Gamerules
Breaks up some of the most overloaded Game Rules such as mobGriefing into individual features.

More Ancient Debris!
Tweaks the world generation to generate around twice as much ancient debris as normal!
Fleecifer
Turns all sheep hostile...

Armaments
Adds a few new unique and interesting weapons to the game
Create: Enhanced Totem Productions
Renewable totems of undying, so you can cheat death with confidence!
SOCD
SOCD / Snappy Tappy / Snap Tap / Null Bind for movement keys