Minecraft Java 1.21 Mods
Browse 135 free mods for Minecraft Java 1.21 — popular picks include Gravity Core Block, SerialCraft, Redwork.
Updated daily
Gravity Core Block
The Gravity Core Block is a redstone-powered device that creates an 8-block radius anti-gravity field
SerialCraft
Bring Redstone to life! A simple mod to connect Arduino and Minecraft via serial port. No complications, just plug and play.
Redwork
Redstone automation mod
Missed Tinkering
The combat and tinkering update added some cool things! This mod expands on the tinkering theme to provide some fun new redstone items.
Skybound Chronicles
A private modpack for me and my friends, built around Create and Create: Aeronautics at its core — featuring airships, mechanical contraptions, and a handpicked selection of mods for an immersive experience.
Peaceful Silverfish
Peaceful Silverfish lets silverfish spawn from vanilla infested stone even on Peaceful. Great for Create farms and contraptions, but works perfect in vanilla too. Includes an option to mute silverfish sounds so your base stays quiet.
RegexRails
Add redstone logic for your detector rails. Compare minecart names, change them, and add to them.
Contraptions o' Plenty
A Minecraft Datapack that adds in (5) Brand New redstone components!
SimpleChunks
An easy-to-use chunkloader with a modern GUI, teleport system, and secure permission management — ideal for farms, redstone, and automated systems.
Sculk Eye
Adds a new Sculk Eye Block - scans entities of a given type in a given radius and emits redstone signal based on the count
Hot Redstone Wires
Wires get hot! Makes redstone dust and blocks painful to step on.
NoRedstone
Disable redstone components in specific worlds
Player Detector
Redstone block that detects if a player is standing on it
Create: Salvage Continued
An unofficial continuation of Create: Salvage. Use Create contraptions to melt unwanted tools back into resources.
Redstone Lamp Link
A Plugin to Control a Redstone Lamp with a Button without a Redstone Wire
Lazy Redstone
Turn redstone contraptions into single blocks.
POWERED
Revamps automation. Adds a ton of configurable & polished redstone components, allowing you to do more than ever before.
AstraRedstoneSystems
A modern and fast plugin for advanced redstone logic systems🌌⚡️
Crystal Components
Crystal based Redstone components
Copper Buttons - New Redstone Buttons
⚡ Craft new copper buttons with adjustable times! The perfect redstone signal extender. ⏱️
Cobalt Age
An expanded redstone, up to 60 power lenght, waterloggable, optimized, with vertical relays, incompatible with redstone, and blue! It comes with minerals and block sets.
Beyond The Simulation
Grow a Lab Grown Brain that Connects Redstone Beyond the Distances, Dimensions, Worlds, Servers and Realities? (yes, connect redstone to real life)
RedsTony's: Redstone Expansion
Standalone vanilla redstone overhaul
Extended Redstone
A mod that adds more redstone blocks with unique functionality
Protect My Redstone
A singleplayer mod that detects active redstone ticks in loaded chunks and warns you before you log out to avoid breaking your farms/flying machines.
BioLock Scanner
BioLock Scanner is a NeoForge 1.21.1 Minecraft mod that adds a player-only redstone scanner for secure doors, bases, and automation builds. It can be mounted on floors or walls, has a configurable detection radius, and prevents mobs from triggering
SmartPack
A Paper plugin for fast, safe inventory packing: compress nuggets, ingots, redstone, and other configured materials with /pack, Smart Packer item support, exclusions, chest packing, and auto-pack options.
Wirelessblock
Adds WirelessRedstone to your World, link your Controller to your Redstone and Controll it Wireless.
RedstoneSpawnersReloaded
RedstoneSpawnersReloaded is a very simple plugin which makes Mob Spawners toggleable via a redstone signal.
Bitwise
Expands computational redstone with new logical components
More Redstone
More fully vanilla style redstone blocks that Mojang should add in Minecraft!
Regius Redstone
This mod adds redstone components that aim to make computational redstone easier.
Craftable Creakings
This simple data pack allows one to craft a creaking egg in survival! Now you can build redstone machines that activate simply by looking at a creaking that doesn't despawn! (The creaking will not despawn if named)
RedSwitch
Advanced economy-driven redstone switches. Let players sell redstone pulses for economy money
RedOut
Allows players to get server metrics like mspt as a redstone signal from an item frame.
Redstone Diode
This adds one simple block: the Redstone Diode. What this does is attaches to any solid + conductive block below it, and transmits the power that block recieves upwards. It's as simple as that!