Neoforge Mods for Minecraft 1.21
Browse 4,488 free Neoforge mods for Minecraft 1.21 — popular picks include Lactose Intolerance [Milk Nerf], Cobble Helper, Frontier Stats.
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Lactose Intolerance [Milk Nerf]
Nerfs the ability to remove effects by drinking milk.
Cobble Helper
Cobble Helper adds a helpful mob that automates cobblestone generation by working directly at a Cobblestone Generator. The mob harvests cobblestone for you, turning a simple early game setup into an efficient automation solution without complex machines.
Frontier Stats
This is a statistics mod which adds levels, guilds, milestones, and various other features, all server side.
Project Tiger
This is a light weight w.i.p mod with new buildings and blocks
/add
add a command that works like /give but with ghost items to prank people
Core Overhaul
A gameplay overhaul mod that tweaks core systems including enchanting, xp progression, anvil repairing, archaeology and more, with all being toggleable.
Bulk Villager Trading Reborn
Shift-click a villager trade and it keeps restocking automatically until the villager runs out. Unofficial 1.21+ revival of Bulk Villager Trading.
Villager Awakening
Breathe life, culture and conversation into Vanilla villagers.
Claims N Raids
Chunk-based land claiming with an item-upkeep cost, plus raiding mechanics based on reaching a target block.
Ars Dragongate
Locks Ars Nouveau (and its addons) content behind defeating the Ender Dragon.

Transfiguration
This is a mod that allows you to possess other players
Shedding Bones - Hostile
Hostile mobs occasionally drop their bones on death
Gearsmithing
Allows you to use the smithing table for upgrading and repairing your gear.
Been There
Marks explorer/treasure maps as already visited, in your inventory and on villager trade offers, so you never buy a duplicate map by mistake.
AMBUSH
The Ambush mod adds Data-driven ambushes to the game. This mod is also compatible with Aeronautics and Create Big Cannons.
The Dungeon Experience
Adds content from Minecraft Dungeons in a pretty vanilla way.
Arrows Recovery
Recover arrows from defeated mobs instead of losing them forever. A simple vanilla-friendly QoL mod for archers with configurable recovery chances.
DeadyPooly
Become Dead Pool, interact with Dead Pool breaking the 4th wall
Minecraft, but block are liquid
This mod turn blocks into liquid
Eternals
Adds various rpg like items and mechanics in order to turn minecraft into my ideal game so if anyones interested in trying it out feel free to download :)
Item Discovery
A small mod which lets survival players name all items whatever they want without imposing any pre-existing names.
Whispers of the Pale Garden
a mod that adds various new additions to the pale garden biome. you can report bugs in the discord server.
Schematicon
A creative planning dimension for builders. Switch from survival to creative and back with fully separate inventories and no balance disruption.

Real Temp
A realistic client-side temperature survival mod with dynamic biomes, weather, altitude, armor insulation, and seasons. Survive freezing winters, scorching summers, and extreme climates with immersive environmental mechanics.
Social Isolation
A server-side Minecraft SMP mod that subtly incentivises players to spend time together.

Progressive Smithing
A Minecraft mod that upgrades the Smithing Table to be more useful and have a proper progression system.
Sanityfy
Adds Sanity to Minecraft for you to use

Don't Stop Moving
Minecraft but if you stand still you take damage. !Warning Very Buggy!
No Dawn
A mod that introduces a mini-mode of endless night with mobs, mechanics and innovations
Oops all Beds
Everything is a bed now :)
Lost Discs
Adds two previously unused Minecraft Alpha tracks that deserved to be music discs.
Systems Reworked: Hunger & Health
A vanilla+ overhaul of food that fixes Minecraft's Health and Hunger systems.
Forever Sprint
Permanently holds down your sprint key for you! Instantly run the second you move forward.
CreatingNations
Build an empire. Forge its engines. Defend every inch. - Nations of the Mechanism A Create Multiplayer Modpack
Stamina and Weight
A configurable survival mod with two main mechanics: stamina and weight. Stamina affects movement and combat, while weight changes how equipment and items impact gameplay. Most features can be balanced through config files.
BossReng's UI Mod
Boss_Reng and various Lofi music creators bring you the best visuals and the most comfortable acoustic experience in Minecraft!