Minecraft Java 1.21 Mods
Browse 126,643 free mods for Minecraft Java 1.21 — popular picks include Undead Horses Overhaul, Hon'Bar Modpack, SkProxy.
Step by step: How to install Minecraft Java mods & modpacks
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Undead Horses Overhaul
Adds new undead horses like drowned horse, stray horse, and gives some features to the zombie horse
Hon'Bar Modpack
Official Hon'Bar Modpack: Perfect for those eager to dive right in with just the essential mods.
SkProxy
A Skript Addon that provide proxy support.
AlexiosMod
This mod adds some vanilla plus stuff like mobs and weapons
[TAPP] Towny apartments / flats
Add apartments to your town! (BETA)
ReduceSneakDamage
An extremely lightweight plugin that allows you to subtract dmg from falling by a certain precent.
Savaru's Worldology [Fabric/NeoForge]
Worldology redefines progression by transforming the world itself into a living system that grows, evolves, and responds to player actions.
Epic Fight - Pehkui FIX
This mod fixies the incompatibility problem between the Epic Fight mod and the Pehkui mod
Nuclear Craft UPdated
A modern port of NuclearCraft for 1.21 featuring advanced nuclear reactors, realistic fuel processing, and complex radiation mechanics for high-tech gameplay.
BackPackSSS ResourcePack
Release ResourcePack for plugin BackpackSSS
Cobblemon: Community Additions
A datapack for Cobblemon, adding custom moves and abilities from the community!
Better Ender Eye Recipe (BEER)
Changes the Ender-Eye-Crafting-Recipe to include Amethyst Shards, Magma Creme and Prismarine Crystals in the Ender Eye crafting recipe. (Recipe still needs Ender Pearl and Blaze powder)
MovementUI
Unique menu navigation system for Minecraft using BetterHud!
RenaissanceMuskets
Mod that adds Black Powder Firearms from the Renaissance to Minecraft, only for Fabric.

Brightness Toggle
Brightness Toggle allows you to max out brightness with one key
Lodestone Warps
Sneaking on a lodestone with a compass teleports you to the connected lodestone. Works cross-dimensional.
Adventure Map Developer
A simple mod created to help building (adventure) maps
Master Tech (MT Craft)
A pack designed to expand creativity in Minecraft
Retro Draconic
A Draconic Evolution addon for 1.21.1 NeoForge that brings back the classic 1.12.2 Fusion Crafting upgrade system. Disables the modern module UI and restores altar-based progression.
Shift Totem
Press Shift+LMB and the totem of undying will move to your left hand.
Harness for dogs and cats
Changes the collar into a harness for dogs and cats
Lobotomy Corporation - Solemn Lament Pack
Change the shield into Solemn Lament E.G.O Gift form Lobotomy Corporation
Archaeology Tweaks
Small, vanilla-inspired tweaks to Minecraft's archaeology system.
Automated Materials Index (AMI)
AMI adds searchable side panels for browsing large modded registries, grouping related items, and jumping into recipe viewer actions without leaving the inventory flow. It works standalone but is even better with JEI and/or EMI for their recipe viewers.
Enigmatic Legacy Plus Retrieve to slots
A small addon for Enigmatic Legacy Plus that makes items from death crystals go to their respective inventory slots. Supports Curios and Cosmetic Armor
Asa's Enchanted Books
Aiming to give every enchanted book a unique texture while attempting to emulate the vanilla style.
SomeAssemblyRequired Addons
Add new sandwich items for the SomeAssemblyRequired mod
Dashes of Rat
Adds a high-speed dash ability on the 'V' key.
Copper Shield
This mod adds a copper shield with a lower durability than the normal one
PvP ZeusDelfin
PvP ZeusDelfin is a near-vanilla resource pack designed specifically to improve PvP clarity and focus.
Calculator-Mochi_753
A simple mod that lets you calculate math expressions directly in chat using the @ prefix.
Big Globe - Spectrum compatibility
Big Globe - Spectrum compatibility.
Igor's 3D Grass Blocks
Modifies the grass block to use a custom model that extends the grass block sides outwards. Compatible with most texture packs.
Belopack
Make every entity shocked.
MetalCamp
It's a survival mod with several items and blocks
AdvancedFirework
Firework Advanced Fun Hub