Forge Mods for Minecraft 1.21
Browse 5,335 free Forge mods for Minecraft 1.21 — popular picks include Dynamic Trees - Terralith, Functional Armor Trim, Bookling Gear.
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Dynamic Trees - Terralith
Compatibility Mod between Dynamic trees and Terralith
Functional Armor Trim
Makes armor trims provide unique stat boosts when worn
Bookling Gear
Library and in game configuration for Eruannie_9's mods
Just Enough Advancements (JEA)
An addon for JEI which let you search for advancements. This is pronounced like "yeah".

Unnamed Desert
Additional structures for the desert and badlands biomes, focusing on an immersive expansion for the vanilla game.
Forgematica
Litematica unofficial forge port. A modern client-side schematic mod for Minecraft.
Better Fusion Reactor for Mekanism PLUS
Reinvention of Fusion Reactor and new stuff
Husk Spawn
🏜 Adds a chance for husks to spawn naturally everywhere in place of a zombie.
Happy Ghast 1.19+ [FORGE/NEOFORGE]
Happy Ghasts and Ghastlings
Create Big Cannons: Advanced Technologies
An Addon for the Create Big Cannons Mod, adding new Cannons and Mechanics
Medieval Siege Machines
Adds medieval siege machines
Vampire's Delight
A compatibility mod for Vampirism and Farmer's Delight with garlic aftertaste.
Create: Gunsmithing
Adds steampunk guns to the Create mod
Cloud Boots (Forge/Fabric)
Adds Cloud Boots, which grant speed and jump boost!
Mutated Items
🔥 Turn 16 items into several dauntless creatures
Sulfur And Potassium - More Gunpowder
A vanilla friendly way to craft more Gunpowder
Valarian Conquest
Valarian Conquest
Twilight Forest - Dungeons & Villages
Adds new content to The Twilight Forest mod, mainly villages.
Happy Go Lucky - RPG Random Teleportation
RPG Theme, Randomly Teleports all players to another location every 5 minutes.
Figura
A client-side mod that allows for extensive customization of the player model.
ManasCore
Modding and Core Library by ManasMods
[Retired] DnT End Castle Standalone
Retired, we decided to retire this project since keeping it up becomes too much of a technical challange for something that is already within main DNT. There be dragons
Inline
a mod for inline text rendering
SDM Economy [Forge/Fabric]
A library for creating and managing currencies
Shield Mechanics
Revamp your defense with customizable shields, passive protection, and new enchantments to enhance your tactical blocking and combat strategies
Diversity!
Introduces a wide range of features to enhance the gameplay experience. From quality of life improvements to new mob behaviors and random sh*t, this mod offers a little bit of everything. The mod is designed to work on server-side as well!
Better Furnaces Reforged
A remake of the mod BetterFurnaces, with even faster furnaces
OptiLeaves
Optimize leaves rendering and increase FPS without noticeable visual changes. Supports NeoForge and Fabric.
PackagedDraconic
Draconic Evolution Fusion Autocrafting with PackagedAuto
Loot Integrations: ChoiceTheorem's Overhauled Village & Immersive Structures
Adds better loot to ChoiceTheorem's Overhauled Village & Immersive Structures chests, including modded loot
Jousting
Adds lances and jousting mechanics
Re:Avaritia[Forge/Fabric/Neoforge]
A reforged version of Avaritia.
Cave Spelunking
Prevents ores from spawning not exposed to air/fluids/other ore blocks
Trimmable Tools
Trim your tools!
Quality Food
This mod adds quality to food and certain food-related material (e.g. crops)
Blood Bits
Blood Particles