Minecraft Java 1.21 Mods
Browse 1,938 free mods for Minecraft Java 1.21 — popular picks include SmeltedOres, Xodium, Item Compare.
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SmeltedOres
Smelts ores that are mined instead of you having to smelt them
Xodium
A lightweight Fabric mod that lets you trade memory usage against stability
Item Compare
A comparison tool that lets you compare item stats and enchantments side-by-side with visual +/- indicators, including support for Hypixel Skyblock. Simply hover over items and press M to instantly see which gear upgrades are actually better.
Glow Squid Spawn Fix
Fixes spawning of glow squids in random water columns which leads to unnecessary items in the world.
Improved Movement
Improves movement through three features: snap tap, sub-tick input buffering and packet optimization. All toggleable via /bm FEATURE with a .json config.
GlobalMarketplace – Auction | Geyser Support
Cross-server Auction House for Paper with anti-dupe, Vault economy, and Discord support.
Stillagers
A datapack which helps with villager lag in trading halls.
Sepd_Kits
A Better Kits Plugin For Your Server
Fix-level
Clean, readable enchantment levels. Replaces Roman numerals with clear numbers, even at extreme levels
Lost Cursor Fix
Fixes Minecraft's inconsistent inventory cursor position by automatically centering the mouse whenever an inventory screen is opened.
OptCraft
OptCraft provides ultimate control over your Minecraft performance!
Scoreboard Health Indicators
Displays scoreboard-based health values as clean, visible health bars above players and entities, even when internal health is hidden.
AntiAFK - The Performance AFK Solution
AntiAFK is a next-gen AFK management tool. With behavior analysis, macro detection, and Captcha tests, it blocks the most complex bots and exploits. Its high-performance design provides fair protection without overloading your server.
Staff X-Ray
A powerful and optimised X-Ray for your server's staff
LET!EM!BURN!
"Destructive" Bridge between Create Aeronautics and other non-Create mods.
Craft Stairs Right!
This Project changes the crafting for all stairs to cost 3 wood and give 4 stairs, because A stair is 3/4 of a block 3 blocks must give you 4.
LagXpert Free
Modular lag management for every server.
FastExpPickup
Makes picking up experience orbs configuratively faster.
Create: Ergonomic
An addon that optimizes tedious manual operations in Create.
Pyre
Experimental TNT and explosion optimization focused on smoother heavy explosion scenarios without intentional game play changes.
Bonk Villager
Using revolutionary bonk™-technology, this datapack introduces the Bonk™-Stick9000. The (totally ethical) application of which, makes Villagers much easier to work with and also should increase performance, when used in bulk due to removing their AI.
Better Ender Eye Recipe (BEER)
Changes the Ender-Eye-Crafting-Recipe to include Amethyst Shards, Magma Creme and Prismarine Crystals in the Ender Eye crafting recipe. (Recipe still needs Ender Pearl and Blaze powder)
ChunkDeleter
Advanced chunk cleaner plugin that deletes unused chunks for Paper/Folia servers
Tweaks
Change some values in Minecraft using gamerules
LagShield Ultimate (Anti Lag)
The intelligent performance modulator for Minecraft Server. LagShield Ultimate uses Arclight-safe async processing to dynamically regulate mob AI, chunk density, and entity speed based on real-time server stress (MSPT). Stops lag before it happens.
Ultra Chunk Collector
⚡ The Ultimate Chunk Hopper - Instant Item Collection & Stacker Friendly! ⚡
TNTDisabler
Prevent TNT explosions and protect your world!
MySecretMods
Fabric 1.21.10 mod that prevents servers from detecting your mods.
Tree Recovery
Repair accidentally peeled bark. | 誤って剝がしてしまった樹皮をもとに戻します
PaperTweaks
A better-performance replacement of the popular VanillaTweaks datapacks, in plugin form.
Controlled Construction
Building is difficult. Let's make it easier!
SmashThePing
this plugin unifies the delay between a shield break to a mace hit and gives all players the same time range to stun slam for mace pvp! - level your playing field now
HungerGameSSS
HungerGameSSS is a high-performance Hunger Games plugin featuring unique Legendary Weapons with special abilities, dynamic gameplay systems, and full arena customization — built for competitive PvP servers.
ElytraSpeed
Advanced speed limiter for spigot/paper servers - AntiCheat Mode - Staff alerts - Folia support
SingleSpear
The plugin limits craftable spears to one per Spear tier.
More Passive Mobs
More Passive Spawns increases the amount of passive animals in your world by periodically spawning small groups of sheep, cows, pigs, and chickens in the Overworld. The datapack stays vanilla-friendly while making the world feel more alive and natural.