Minecraft Java 1.21 Mods
Browse 87 free mods for Minecraft Java 1.21 — popular picks include GottschCore, Mapper Base, DungeonZ.
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GottschCore
This is a new base library of code that is used in all of my other mods.
Mapper Base
A mod that provides basic elements for all my other mods.
DungeonZ
Base mod to add new dungeons with one default dungeon
Ledger Databases
Adds support for additional database types to Ledger
Berezka API for Abandoned city buildings
This mod adds config and plugins support to Apocalypse structures: Abandoned city buildings mod
VapourWare
Base mod that is the foundation for 1.20+ mods by VapourDrive. Contains shared code for fuel powered machines, and a wrench.
SL Library
Adds various base utilities, synchronization help, policy, packet sending and data driven
ZeroCore
A mod intended for other mod authors, it contains a revised multiblock API that support multiple client mods without performance penalities, a new new GUI system, a base BlockEntity implementation that simplifiy data syncronization and much more.
Unnamed Framework
The base framework for my datapacks, providing an API of common functions and easy compatibility between modules.
Timefall Coin (Themed Currency Base)
This mod adds the Timefall Coin and Timefall Coin Pile, used in the TSMP, but is a base that can be changed to fit a Modpack's Theme
More Stick Variants (MStV)
Sticks for every kind of wood. A base mod for other Variant Mods using Sticks as crafting ingredients.
Villager Fletcher House
Adds a villager fletcher house to the plains biome
The Mighty Architectury
Architectury port of The Mighty Architect. Design elaborate buildings within a minute!
Virtual Library
Virtual Library is a collection and api for building mods. it comes with mixins, a shader plugin, a keybind library, a config loader, a command library, an in memory plugin loader and a rendering library.
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.
CobbleLibs
CobbleLibs es una librería base para mods de Minecraft (Fabric) diseñada para facilitar el desarrollo de sistemas avanzados
FrogiLib
A small collection of blocks for my building needs
EconomySystem
lightweight, no-dependency economy plugin for Minecraft that provides essential digital currency features with optional database support and full configurability.
FurWatch
Login and user Management Mod with Additions for Building Blocks in 1.21
SecureLib
Security blocks library and standalone mod to protect your base
Twigonometry
A lib for building trees in-code
GlobalMarketplace – Auction | Geyser Support
Cross-server Auction House for Paper with anti-dupe, Vault economy, and Discord support.
Ultimate Auction System (UAS)
Ultimate Auction System is a Minecraft 1.21.1 NeoForge auction-house mod, where players use /ah to list items, bid, buyout auctions, track history, watch listings, with UBS-backed fees, payouts, refunds, alerts, admin tools, and multilingual support.
More Variants Core
Base mod for More Variants Add-ons
Fabric Database H2
Fabric database module for H2.
custom-crafter-api
An advanced PaperMC crafting engine for building complex recipes with NBT-supported custom items.
Cauldron API
this mod is an api that allows mod creators to create multiple type of recipe that base on cauldron!
TitanEconomy
The ultimate all-in-one Server Core: Economy, GUI Shop, Auction House, RPG Leveling, Physical Bank Notes, and a sleek HUD. Native support for Paper, Spigot & Purpur.
Gelatin UI
A library that provides easy dynamic UI building tools.
Give me More Slab (GMS)
GMS is a simple and practical Minecraft mod that expands building possibilities by adding slabs for many more blocks.

ICN Additions
This is a datapack created to house all crafting recipe modifications in the ICN Modpack I created.

Economist
The next generation economy plugin with database and multiserver support
JSMySQLFix
JSMySQLFix is an innovative plugin designed for the Velocity proxy environment that ensures seamless MySQL database connectivity by automatically downloading and embedding the MySQL JDBC drivers.
Packdev Toolkit
A collection of developer tools for building modpacks and datapacks. Pull textures/models out of resource packs, dump lang entries, search datapacks, and copy item IDs: all without leaving the game!
Statsreader (Bedwars GommeHD.net)
StatsReader shows BedWars player stats directly in the TAB list on GommeHD.net using a community-updated database that syncs via /stats.
Simple Client Base
This library mod added a module management system for Minecraft.