Minecraft Java 1.21 Mods
Browse 435 free mods for Minecraft Java 1.21 — popular picks include UltraSpawners [LITE], Advanced API, Back to Blocks.
Updated daily
![UltraSpawners [LITE]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/151436.webp)
UltraSpawners [LITE]
UltraSpawners is a lightweight spawner management plugin featuring basic stacking, simple trust permissions, and economy based mob unlocking, designed for survival and economy servers.
Advanced API
AdvancedAPI provides very simple code, for example, ItemBuilder or SimpleInventory, which can be used to create things faster. ONLY FOR PLUGIN DEVELOPERS
Back to Blocks
Turn slabs, stairs, walls and carpets back into their block variants!
QuickPOT / PVP Potion
PvP/combat potion switching made easy with a fast radial menu, supporting drinkable, splash, and lingering potions with 8 customizable slots.
Vlast Connect
The mod adds better settings for the “Vlast” server, auto-adding servers, auto-downloading resource packs, Litematica support, backpack functionality improvements, and much more.
funcy's screenshot plus
A fabric mod that automatically organizes your Minecraft screenshots into folders by world and server.
AH BackPack
A simple, strong Backpack Plugin for minecraft. Create shared Backpacks, easily!
One Stack Size
Makes every single item have a stack size of 1, because why the hell not.
ViewInventory
You can view and edit other players' inventories.
Green and Brown Dye Recipes
Adds crafting recipes for both green and brown dyes
LagCleanX
LagCleanX is a lightweight and efficient lag management plugin designed to keep your Minecraft server running smoothly. It periodically removes unnecessary entities, clears dropped items, and provides customizable cleanup settings to ensure Good Gameplay
SettingsProfiles
Save and load profiles of your settings and mod configs.
Kitchen Sink Modpack Template Pack
A modpack with many basic mods for starting a kitchen-sink modpack. Including world gen, performance, graphical, storage, extra mobs and quality of life mods.
ZInvisItemFrames
Craft invisible item frames. Folia-compatible invis item frame plugin.
AutoSaveAll
AutoSaveAll is a lightweight Paper/Spigot plugin that automatically runs the save-all command at configurable intervals to prevent data loss. It supports Minecraft versions 1.13 through 1.21 and includes features like chat broadcasts, random
Simplex Trimmer
Effortless World Optimization. Reduce file size by removing unused chunks.
MCommander
Some basic commands collection plugin for your server.
Easy Oxidization
Craft oxidized copper easily with bone meal!
Teleport Command
🌐Teleport Commands is a high-performance, Server-Side ONLY teleportation suite for Minecraft. It provides a complete set of player-friendly teleport commands with safety checks, configurable delays, and persistent data storage—no client mods required. 🔌✨
Polydex2REI-Forked
Converts Polydex recipes to work with REI!
AutoUnArmorX
Automatically unequips armor pieces when they reach 1 durability to prevent them from breaking. 100% client-side and works on any server.
Rune Highlighter
Max rune Highlighter for Complex Gaming. HUD Overlay highlights max runes in your inventory without the need for hovering.
Junk Dropper
Instantly drops junk items from your inventory with a single keybind while keeping your kit safe. Ideal for PvP and arena servers.
MHDF-Tools
MHDF-Tools | Dream Tools | ✨ A lightweight portable high performance Bukkit base plugin ✨MHDF-Tools | 梦之工具 | ✨一款轻量化便携高性能的Bukkit基础插件✨
SpawnStash
This is the best and most customizable donut spawnstash plugin out in the wild
Fantastic Smelting
A small mod to boost your smelting-experience. Allows you to smelt raw resource blocks, saving you time and space.
ADSAnitiray
Blast X-Ray, Freecam & ESP — legit-safe, 100% free, fully yours.Supports all versions.
Deep Alts
The ultimate alternate account checking solution.
Espoir SMP
The plugin's twist is ⚙️ How the system works: 🧿 You start with 3 souls. 🔻 Each time you die, you lose a soul. 💀 At 0 souls, you become a ghost: spectator mode for 24 hours. ⚔️ Kill a player → you steal one of their souls, if you don't already have all
SmpStarter Plugin
🔥 SmpStarterxZ — Ultimate SMP Start System
TPS MONITOR
monitors tps and notify console if the server is lagging.
Lag Remover
This is a simple plugin that removes lag on a server
ISS
This Datapack adds an easy way Save and Load player inventories.
Ri0ts Factories
Create massive production factories to automate tasks
OptiWorld
OptiWorld automatically cleans old dropped items and collects experience orbs every 60 minutes. Smart protection keeps player-placed items and nearby drops safe. Zero lag, works on any server.
QoL
(1.21.5+), Adds Quality of Life features that everyone needs in their Survival worlds/servers (will also include some of my other datapacks/mods in here)