Minecraft Java 1.21 Mods
Browse 2,491 free mods for Minecraft Java 1.21 — popular picks include Builders Workshop, Infrastructure Plus, ModernDoors - RESOURCE PACK.
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Builders Workshop
A building focused modpack with a plenty of atmospheric biomes and even more building blocks to help your creative mind create the builds of your dreams.
Infrastructure Plus
Infrastructure Plus is a mod focused on realistic infrastructure and urban development in Minecraft. It continuously expands the game with new building assets for detailed and authentic environments. (Best use as MTR Addon)
ModernDoors - RESOURCE PACK
Retextures doors and trapdoors for urban building!
Voloron 4
A kitchen sink modpack with around 350 magic, tech, exploration, and building mods for 1.21.1!
Perfect Gen
This modpack redefines the experience of exploring and reshaping the world. Packed with light RPG elements, this pack brings adventurous spirits together with captivating quests, mythical creatures and immersive world-building.
Ominous Wither
Adds a thrilling boss fight experience, summoned by building the Wither with Bad Omen.
Build Gear
Adds gear that makes building easier - like by increasing your build range for example!
ExplosionProtector
Addon for Coreprotect that protects buildings from explosions if the block was placed by the player
Cool Wool
A clean and smooth wool texture pack that enhances all wool colors while keeping the vanilla Minecraft style. Perfect for building, PvP, and creative worlds.
Compressed Box
Create Compressed Boxes to gain space in your base
Ben&BänzCraft
A new Minecraft Experience based on Vanilla Friendly Mods. Explore the World with many new Biomes and Dungeons with your new Weapons like Hammers, fighting Staffs and more. Build a nice Base with the help of some new Blocks. Have Fun!
Satisfactory Planner
A client-side utility mod that adds a fully interactive, Satisfactory-style project planner. See a complete crafting tree, track required resources against your inventory, and manage your building goals directly in-game.

AAC SMP Pack
A collection of Datapacks, Mods, and Server Utilities that won't break a world between versions. Expands building and roleplay capabilities without adding any new blocks or items! Great for Vanilla servers!
Pixie Hollow
Exploration / Building / Combat
intrf.null0
A horror mod that adds a creepy void dimension. After three days, sleeping teleports you there. Features abandoned houses, floating structures, (reminder this is in alpha so its not really done!)
CobbleBob: A Pokémon Adventure
Welcome to Cobblebob: A Pokémon Adventure! This pack is focused on one thing and one thing only... filling out the Pokédex. For the adventurers, there are dungeons and backpacks. For the builders, there are many different building centered mods.
RoadTrip Create Aeronautics
modpack for building vehicles and mobile bases aroud Create Aeronautics
universal modpack
universal modpack client created as a base for your modpack
Villager Trade Lock
Tired of those players creating a monopoly or heavily crashing the prices of villager obtainable items on your server? Well this plugin aims to limit the speed of building a monopoly/price crashing by locking a villager's trades after opening them.
Torridium
A mod that allows torches to set your wooden houses on fire!
Simple Casual Building
A modpack filled with useful building mods, which add building blocks, decorations and worldedit that makes it easier to create large structures.
Monsters Magic and Missiles
{WIP} Im using fear the Nightfall as a base modpack and adding more magic,and modern weapon mods as well as ad astra and various ~realistic-ish additions
Sable: Water Pressure
Realistic depth-based water pressure: the deeper you dive, the more it hurts — unless you're wearing Create's diving armor or building a submarine with Create: Deep seas.
NLYB: Looting and Exploration (Dungeon Automations and more!)
Shrink and store entire dungeons, trees, temples, and villager houses -> then loot them safely from your base. (Never Leave Your Base)
advance-player-stats
AI-powered player stats tracking — kills, blocks, playtime, deaths, and more. Requires NSR-AI base
Malts
An open-source and free Vaults plugin that incorporates a warehouse for mass item storage.
Sentari Teocara
The Temples' Architect Building and Adventure Modpack with alot of QoL and minimal tech!

ICN Additions
This is a datapack created to house all crafting recipe modifications in the ICN Modpack I created.
Cinnamon Swirl
Cinnamon Swirl is a Vanilla+ modpack focusing on the core elements that make Minecraft great: Exploration and Building. It adds many new quality of life mods, completely overhauled terrain generation, and new vanilla-style blocks and content.
Combat Master
A powerful Minecraft (Spigot/Paper) combat plugin with advanced combo counter, sounds, miss detection, color system, database and leaderboard.
Small Sensible Dudes Unlimited
A cobblemon centered modpack inspired by others of its kind focused on building, cobblemon, and chill vibes.
Alp's Creative Building Modpack
Client-side Fabric 1.21.5 pack focused on performance, visuals (shaders), and building tools. Includes Sodium, Iris, Litematica & more. Vanilla server compatible.
AntiLitematica
Server plugin blocking Litematica's auto-place to prevent unfair building advantages.
Base Origin Bugs
Quality of life tweaks to the origins of the base Origins mod by Apace! (Does not fix legitimate bugs with the mod)
CrownEconomy - All In One | Multiverse Support
All-in-one economy plugin: GUI server shop, auction house, player chest shops, secure trading, banks with interest, and leaderboards. Works with or without Vault. PlaceholderAPI + LuckPerms support. Paper, Purpur, Spigot.
Happy Ghast Parking
Park your Happy Ghasts to make them stay completely still! A better Happy Ghast mod featuring increased flying speed and mid-air parking (perfect for building)