Neoforge Mods for Minecraft 1.21
Browse 54 free Neoforge mods for Minecraft 1.21 — popular picks include Structure Gel API, YUNG's API, Oh The Trees You'll Grow.
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Structure Gel API
An API for simplifying the developer end of creating generated structures.
YUNG's API
Library mod for YUNG's mods.
Oh The Trees You'll Grow
Tree library used by popular mods such as Oh The Biomes You'll Go.
Duplicationless
A lightweight Minecraft library that simplifies JSON configs, block data storage, and entity tracking across chunks and dimensions.
Structures Tweaker
StructuresTweaker gives you complete control over how players interact with structures in your world.
WorldWeaver: New Dawn
An unofficially maintained continuation of the BetterX Team's utility library for Fabric and NeoForge, designed to streamline common modding tasks, especially those related to world generation
Sky Aesthetics
Change the minecraft skybox as you wish!
Infiniverse
API for creating dynamic dimensions
More Density Functions
Utility mod to add more density functions for world generation datapacks.
Ars Monde Lib
Content library for Ars Monde
Piglin Conservatory v3.0
Adds a news structure to the Nether, The Piglin Conservatory, along with a new Obsidian Apple, Dragon Fruit, Toxic Mushrooms, Hoglins' Fossils, Corrupted Emerald and a New Music Discs!
Create: Dimension, Steamworks Realm
Create: Dimension, Steamworks Realm introduces a brand-new mining-focused dimension, designed for automation and large-scale resource extraction. This world is filled with rich veins of ores
Server Sided Portals
Create custom portals and dimensions compatible with any client!
Uniful
Unify Materials together!
Generator Accelerator
Optimizes the Minecraft worldgen and chunk management by introducing better calculations.
Easier World Creator (ewc)
library mod mostly designed for world-gen
CAWEZ'S Mantle to Stratus
A vertical expansion to Minecraft adding 3 new dimensions both above and below the Overworld, with many sights to see and challenges to overcome.
Modified Biome Source
Add modified biome sources that can be configured.
Keystone Expansion Pufferfish's Skills
MMO-style skill tree expansion for Puffish Skills, adding new progression categories like Combat, Mining, Exploration, Farming, Crafting, Building, Magic and Taming.
Health Enchantment
New enchantment that, when applied to armor, lets you get more health.
Dynamic Ore Veins
An API for creating and shaping custom large ore veins with datapacks!
Physical_structures API
Adds the ability to generate physics structures from Create aeronautics using the API during world generation.
Isekai API
A neutral primitive language for Minecraft worldgen — compose any worldshape (floating islands, new dimensions, layered worlds) from datapack. NeoForge 1.21.1.
Jump Enchantment
New enchantment that, when applied to boots, increases your jump height!
The Collective, The Aeronautical Edition
A create Aeronautics Modpack Made for The Collective SMP
IONite Powered
This mod is primary used to offer items and other things usable in data packs and the alike
better mob : jungle expansion
Better Mob: Jungle Expansion transforms Minecraft jungles with animated creatures, dangerous predators, immersive wildlife, GeckoLib animations, tropical atmosphere, rare mobs, jungle structures, and realistic exploration adventures.
Mansioneer
Adds biome-specific variants for Woodland Mansions; easily expandable with data packs!
TFC Structure Compat
TerraFirmaCraft compatibility for structure mods.
e418
[in development] A library mod providing support for data-driven gameplay events.
Fennec: Jukefox
Music assets for the Fennec modpack
CustomMeteorJS
Using KubeJS to customize the meteorite of AE2
Sable Encounters
way of making sable sublevels spawn with entities/structures
WeatherCore
Library mod for registering custom weather conditions
Pokeballs to the Walls
Cobblemon addon that ports Gravelmon Poke Balls and adds orange and purple apricorns without the Gravelmon or GEB dependency.
Trillion O Trees
An overworld mod adding many more tree types and forests... some added structures too