Forge Mods for Minecraft 1.20
Browse 51 free Forge mods for Minecraft 1.20 — popular picks include Structure Gel API, Duplicationless, Structures Tweaker.
Updated daily
Structure Gel API
An API for simplifying the developer end of creating generated structures.
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.
Atlantis API
Collection of utilities for Forge mods and plugins
Re-Dimension Stages
An unofficial version of mod Dimension Stages for higher MC version.
Hyle
A worldgen feature API for underground changing mods
Infiniverse
API for creating dynamic dimensions
Preset Dimensions
Bare-bones modpack dev helper mod for copying pre-prepared dimensions into the dimension folder of newly created worlds.
KazSWUTMCore - Forge
Library for kazmur mods: They Track,Ore Cow, Prison in prison, Battle Weapons, Battle Weapons, Accelerator,Sixteen Dimensions and etc.
Worldgen Revisited - Now with noise caves!
OreTweaker, CaveTweaker, FeatureTweaker, WorldTweaker, and more!
Server Sided Portals
Create custom portals and dimensions compatible with any client!
Generator Accelerator
Optimizes the Minecraft worldgen and chunk management by introducing better calculations.
Sleep Anywhere
Sleep anywhere without a bed!
GTM World Layers
Adds world layers and ores for other mod dimensions that cause issues with KubeJS
Forest Dweller REMAKE
This Mod add a new Dweller to Minecraft! (Requieres Geckolib)
Billy - The horrors Unleashed
Dive into a world of terror with Billy, a horrifying monster that will haunt your Minecraft world. This mod introduces a dark and chilling new entity, Billy, an unpredictable and relentless creature.
Modified Biome Source
Add modified biome sources that can be configured.
Radioactivity
A mod that adds radioactive blocks and items to the game
More Magic
Adding More Magic to Minecraft with Enchanted Gems, Powerful Artifacts, and Mystical Spells
Biomes
This mod adds new biomes, dimensions, blocks, items and weapons. This mod has localization in Russian and English.
Splendour Ablaze Epoch
This is a new dimension adventure module with a Chinese flair. Requires GeckoLib as a prerequisite.
Assorted Core
Adds an assortment of items and blocks to be used by the other Assorted Mods.

Genflower
World gen & loot utils library for datapacks and mods.
Berezka API for Modern Structures
This mod adds integration between Berezka API and modern structures, which adds methods for easier creation of addons and adds new structures from templates.
MemorySweeper
Aggressive chunk unloading to prevent memory creep during exploration
Minecraft New Generations
Minecraft New Generations, or MNG for short, is a Vanilla+ Adventure and RPG mod pack for Minecraft 1.20.1 Forge. Its objective is to give you the feeling of old Minecraft Golden Age in this New Generations
Big Globe - Just Enough Guns Compatibility
this mod adds compatibility between Big Globe generation and Just Enough Guns
Kane Parsons Backrooms elements
This mod is intended to be used as a Library Mod with my new up and coming Intermediate Liminal Dimensions mod
Worldgen Flexiblifier
Adds flexibility to various aspects of vanilla worldgen, allowing customization of otherwise hardcoded parameters
GBN Framework
Extras for GBN modpacks
Proxima's Magical Library
All the magic of the world, in one single pack.
Pantheon: Floating Islands
The ground’s gone. The sky’s your world now.
The Crafting Collective
an RPG magic and mechanical style modpack meant for exploration and player empowerment.
LiveWorldgen
In-Dev tool for quickly modifying worldgen settings for visually experimentation
forks & giggles
A simple mod that adds forks as weapons
Nuclear-Core Lib
A Nuclear Core Library for standardizing