Minecraft Java 1.21 Mods
Browse 12,087 free mods for Minecraft Java 1.21 — popular picks include Slugs Vibrant Visuals, RamLeakFIX, One Island.
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Slugs Vibrant Visuals
This is a vibrant shaderpack made by Thegodlyslug
RamLeakFIX
Eliminates client-side memory leaks by purging unused textures and entity garbage from RAM.
One Island
Start alone on a small island in an endless ocean. Gather resources, build, explore, and survive with what the sea provides.
Vulkan optimization Boost
Use the simple and powerful Vulkan optimization Boost integration package to greatly optimize your game! 使用简单又强势的Vulkan optimization Boost整合包大幅优化您的游戏！
Quins Craftoria
A enhanced version of craftoria with sodium and animal mods!
Slick and Packed
A slick modpack with tons of quality of life features that is packed with features and optimisations - and is completely vanilla! Some mods (such as freelook) may not be allowed on specific servers, but most are allowed everywhere.
Sneykor's Cobblemon online
The modpack contains mods that allow you to have fun playing the Cobblemon mod. There is a new world generation, improved content with Pokémon (Pokémon riding, TM/TR, items, regular and legendary Pokémons), farming, building blocks and storage systems etc.
nGuard — AntiXRay, AntiFreeCam, AntiESP
Advanced, performance-optimized protection against XRay, FreeCam, and ESP with behavioral detection
FPS Unlock - Perfect World
💎 This pack includes vanilla-enhancing mods and visual additions that make the game more comfortable for vanilla gameplay! 1.21.4
Comfy Survival
The Minecraft survival modpack mixing performance and graphics
Christmas Modpack 2025
A perfectly optimized and enhanced Minecraft Christmas Modpack to play with your friends!
Server Monitor
Simply Website based Server Monitor
Nickly Optiforged
Nickly Optimized, but for (Neo)Forge! For 1.21.1, 1.20.1 and 1.12.2!
Item Entity Auto Mending│物品實體自動修補
An item that has the Mending enchantment dropped on the ground will consume any experience orbs within 3 blocks to repair its durability.│一個落在地上具有修補附魔的物品會消耗3格方塊內的經驗球來修復耐久度。
The 128MB Pack
Minecraft on 128MB of allocated memory. It is a bit unstable and can crash quite a bit, but it works nonetheless. For a more playable experience though, you can increase the amount of allocated memory.
Arrow HUD
Arrow HUD is a mod that allows you to see the arrow type you are about to load into your crossbow/bow
![[Ecentrix] Progressive Core](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/278273.webp)
[Ecentrix] Progressive Core
Lightweight shared library powering all Progressive Mods, ensuring stability, performance, and seamless compatibility.
Cobblemon Sanctuary
The carefully curated modpack made specifically for the Cobblemon Sanctuary SMP, focused on both performance and gameplay!
Vex Totem
Just a small resourcepack that changes totem of undying to 3D Vex Totem. UPDATE TO 1.21.1!!!! No Optifine needed.
Sunbox Vanilla Pack
Get a wonderful experience playing on SunboxMods Vanilla!
WalksysDev Crystal PvP
A clean, performance-focused Minecraft resource pack designed for better visibility in PvP combat.
Server Booster
Stop the lag and stabilize your TPS with ServerBooster—a premium suite of high-performance tools designed to handle 100+ player survival networks with ease
OR Stash
Improving your experience on Origin Realms with a wide range of quality of life additions
AutoFish Fix
Fixes Autofishing "breaking" by allowing you to right click note blocks to cast.
Cobblemon Crafted Edition
Cobblemon Crafted Editon promises an unparalleled adventure where the synergy of these mods offers an immersive and exciting Cobblemon/Vanilla+ experience.
Sodium PvP
Sodium Perfected & Optimized for PvP
CookieAttack 5
Das offizielle Modpack für CookieAttack 5. | The official Modpack for CookieAttack 5.
Guests
Show off your builds to newcomers while keeping gameplay secure! Perfect for SMPs that want to protect themselves from griefers and server scanners. Players will join as a guest and you can keep your whitelist off and public!
Neoforge Optimization Template
A template for creating modpacks on Neoforge, with optimization mods included
SemiVanilla+
Lightweight and optimized template modpack for semi-vanilla fabric servers with server utilities such as tpa, vanish, temporary bans, discord link, anti griefing and a few other mods that makes starting out extra convenient.
Nezz Pack
Nezz Pack is a Minecraft modpack designed for both Survival and PvP gameplay.It focuses heavily on performance optimization to increase FPS and reduce lag.It uses lightweight mods like Sodium, Lithium, and Phosphor for smoother rendering and faster chunk
Survival Pack
Survival Pack is a lightweight Vanilla+ modpack that enhances survival with better lighting, voice chat, performance boosts, and schematic tools — all without changing core gameplay. Perfect for players who want a smoother, cleaner survival experience.
Optimized Mangrove Propagule Models
this resource pack optimizes the extremely unoptimized mangrove propagule models, improving performance in mangrove swamps.
Ultimate Server Pack Performance
improve sinificantly server performance
Mining Progress HUD
This Mod Show you How much you have mined.
BiFrost
A small modpack with all the mods required for the Midgard Community Pack!