Forge Mods for Minecraft 1.21
Browse 841 free Forge mods for Minecraft 1.21 — popular picks include KubeJS Custom Rarity, Cludos Rupee Counter, Phase Pulse.
Updated daily
KubeJS Custom Rarity
Let you create new custom rarities using KubeJS
Cludos Rupee Counter
Adds a Zelda inspired rupee counter to the bottom of the screen but for emeralds
Phase Pulse
A lightweight mod for Minecraft that bridges in-game events to the Phase Pal desktop companion app. Sends real-time player and world events via local TCP to enable ambient companion reactions.
Mobcrafter
Turn your block creations into controllable units. Build structures, capture them, and command them like an RTS army in Minecraft.
Fern Config
Multi format config library with a lot of features
Effective Armors
A data driven mod for modpack makers to add extra effects of armor sets.
Json More
A powerful extension mod for JsonThings that lets you create custom chests, containers, signs, note blocks, fluid tanks, Tinkers' Construct tools, and more — all through JSON configuration.
Kage Library
Provides shared modules and common functions for various Minecraft mods.
Phantomwings
This mod/datapack add an early game elytra with lower durability
CombatProperties
Adds an attribute-based combat system that enhances battles with critical hits, blocking, evasion, and full modding API support.
ForgeDiscord
The modded version of the popular Paper/Spigot plugin, DiscordSRV. This mod is not made by the developers of the plugin.
Fabric Tabs
Brings Fabric API's paginated creative tabs UI to Forge and NeoForge.

No More Messages
A server-side method for disabling all player messages in chat.
EntityChunkData
An alternative of Level#getEntitiesOfClass to collect entities.
Tom's Loot
This modpack adds a variety of loot tables and can be used by other mod developers for structure mods and other mods with loot tables as a basis.
HighMod
HighMod is a early mod which adds custom dimensions , items, blocks, armour, custom entities and more! It doesn't require GeckoLib to load custom entities
The Crafting Collective
an RPG magic and mechanical style modpack meant for exploration and player empowerment.
BBS Addon Engine
The BBS Addon Engine is an essential compatibility layer that allows you to run BBS CML addons directly on the base BBS mod and BBS FS.
OP Blocks MOD For Java Edition
Every block you break is OVERPOWERED! Massive drops, diamonds, explosions and OP effects on every break!
FlansKnowledgeLib
A Library Mod For My Mods
Player Abilities
Adds an extensive and customizable ability framework to grant players active, passive, and triggered abilities.
T0PK4_lib
This is a next-generation bugfix mod required for ModderEFGS's and T0PK4's mods to work.
AI Crafter
Minecraft AI Assistant brings the power of Google Gemini AI directly into your Minecraft world! Get instant help, answers, and even execute commands through natural language all powered by cutting-edge AI technology.
InvItemMark
Mark and display items in containers or your inventory to other players.
DataTip
JSON-driven custom item tooltips via resource packs. Multi-language, rich text, NBT/condition matching, shift-protected display. No coding — just JSON.
SnAssets Library - Particles
A library containing particles & particle textures for my & other peoples mods.
Minecraft Jedis (Redis Driver)
Up-to-date Jedis Redis client wrapped as a universal Forge/Fabric/Bukkit library for plugins like Grim.
Minecraft MongoDB Driver
Up-to-date MongoDB Java sync driver wrapped as a universal Forge/Fabric/Bukkit library for plugins like Grim.
Minecraft PostgreSQL JDBC
Universal jar shipping the PostgreSQL JDBC driver as a Bukkit/Spigot/Paper plugin and Fabric/Forge/NeoForge mod.
CrafterLib
CrafterLib - A robust Custom Crafter library for Minecraft
Switchy & Pufferfish Skills Compatibility
Pufferfish skills component for switchy 3.0 and onward
Juix Resources (mod version)
Mod enabling Juix datapacks' custom textures
Lore Link
Library mod for Ultra Studios' mods
Configory
Configory is a lightweight configuration library for Minecraft mods. Define each value once - with its type, default, and validation rules - then read and write it with full type safety, dot-notation paths, and JSON-backed, per-mod config files.
Spell Lib
Adds a bunch of spells for other projects to use, with customization. Makes projects that want to add spells easier to make, with any casting system.
Craftable.Tridents
It is a mod that helps you to craft tridents