Minecraft Java 1.21 Mods
Browse 22,200 free mods for Minecraft Java 1.21 — popular picks include Remove Darkness Effect - Plugin, Arbys Simulator, CMBT (Combat).
Step by step: How to install Minecraft Java mods & modpacks
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Remove Darkness Effect - Plugin
Remove the Darkness visual effect from the game, allowing players to toggle it on or off.
Arbys Simulator
all our food KEEPS BLOWING U-
CMBT (Combat)
Combat datapack that turns existing tools into new weapons.
Vanilla Recipes Plus [Mod available]
Have you ever thought, 'Minecraft needs more crafts for quality of life?'...well, I have. So I added my ideas.
Compact farms
Sacrifice full chests of a single item to get an infinite generator for that item.
Let's Troll
Troll your players with ghost mode, custom stands, and item-bound tools. Simple, fun, and server-friendly.
Forgotten Realm
A forgotten realm, long lost to many, now rests within your grasp.
SlimeRange
Turns minecraft world into Slime Rancher
ShulanlanMod
Some interesting lightweight mods ideas
Balanced Iron Farms
Rebalance Minecraft's overpowered iron farms. Part of the Balanced Minecraft project.
NoBlocksDrops
Prevents blocks from dropping anything
EnchantBoost
Receive temporary glowing effect when you enchant an item.
LifestealWorld
Paper recreation of the Lifesteal World event mechanics
Copper Fatigue
Decreases the amount of copper dropped from ores, if you like mining but not cluttering up your inventory.
Potion Imbuement
Similar to tipped arrows, you can now imbue effects onto melee weapons using lingering potions, which will apply the effect to the targeted entity.

ItemBlock
ItemBlock is an essential tool for server administrators that allows you to dynamically and visually restrict the use, placement, and mining of any Minecraft object or block.
Ali's PvP (Phone)
Fully optimized for Android with, performance tweaks, and seamless mobile PvP gameplay.
Enchantment Amendment
A few amendments to vanilla (and some modded) enchantments!

Pigly's Combat Tweaks
Combat-related tweaks that can be enabled through config options. Mace cooldown, better impaling, anti combat log, etc.

Ashen World
A Fallout-inspired survival mod for NeoForge that introduces radiation, mutations, contaminated environments, chem crafting, and dangerous evolutionary changes to your Minecraft world.
Little Birdie
Little Birdie its a mod based on the minigame and mechanics of the game "The Rag Gang" from the SCG4 event by Eufonia Studios.
DiscordPort (Fabric)
Bridge your Minecraft server and Discord — two-way chat relay, rich status embeds, account linking, and more.

WorldVersionBackport
A minecraft fabric mod that allows older minecraft versions (pre 26.2) to load newer worlds that have been '''''''''upgraded''''''' and deupgrade them
WT SkyGrid
A modern Sky Grid world generation mod for Minecraft 1.21.X where blocks are placed in a 3D grid pattern, floating in the void. Every block is random — ores, wood, lava, chests, spawners — making for a unique survival challenge where every block counts.
2x Inventory + Dedicated Elytra Slot
Doubles the player's inventory and adds a dedicated elytra slot.
FrameHelper
Create invisible item frames in the simplest way by clicking with Shift
Whistling Petals
Arrows can break spore blossoms and harvest glow berries; configurable to support more items
close-sfx
This mod enables you to turn on or off the sound effects of high-version Minecraft battles.
Project: Maintenance Universal
Professional Maintenance Modes System for all Loaders and Servers

Elemental Maces Paper
This plugin for paper 1.21/1.21.1 adds 6 different custom maces.
Endurance Items
Keep your gear safe with Endurance Items -->tools and armor stay in your inventory when they break instead of disappearing forever.
FishingbotServerside
This is the Server side (Spigot/Paper/Purpur + now Fabric (server)) counterpart to the Fabric version of Fishingbot!
Disable Illager Drop
Disables totem and emerald drops from Illager-type mobs for better balance.
Everyone baby
A datapack that makes all mobs become a baby, even those that can't in the basegame. Use this datapack if you want the cutest experience :D.
Enchanced backpacks
Enhanced Backpacks is a new take on backpacks in Minecraft. Instead of providing free extra inventory early on, this mod introduces weight-based and immersive mechanics.

Bauble Mounts Fix
Fixes a serious bug in Bauble Mounts