Modscraper Modscraper Minecraft

Sort By

Type

Content

Tags

Krypton logo

Krypton

Mod

by tuxed

A mod to optimize the Minecraft networking stack

Type

Mod

CurseForge Downloads

37,867,215

CurseForge ID

428912

Modrinth Downloads

44,882,593

Modrinth ID

fQEb0iXm

Last Updated

Nov 7, 2026

Description

Warning

I do not provide any guarantees about Krypton's stability, compatibility with other mods, or support for every possible setup out there.

Support for this mod is provided on a "best-effort" basis.

I have held down a very demanding job since November 2021. I consider this mod to be effectively feature-stable and will generally only provide updates for new Minecraft versions on an as-needed basis, based on my personal availability.

Don't ask if you can adopt this mod. I've done this few times before. It has not gone well, so don't ask.

What's Krypton?

Krypton (from Ancient Greek kryptos, "the hidden one") is a Fabric mod that attempts to optimize the Minecraft networking stack. It derives from work done in the Velocity and Tuinity projects.

Krypton contains several optimizations, including:

  • Highly optimized Netty handlers derived from the Velocity proxy, which I am the developer of. These handlers have sen real-world usage and extensive profiling, and strategically deploy native code where it makes the most sense.
  • Flush consolidation to lower server CPU usage (and reducing the impact from hardware security vulnerabilities which exploit speculative execution) and lower server tick times.
  • Micro-optimizations to reduce memory usage and improve packet serialization speeds.

Please join my Discord to discuss the mod or get support.

Compatibility

Krypton should work anywhere where a Minecraft can run — naturally, however, it is tuned for Linux.

I try to ensure that Krypton will work with the Fabric API, Lithium, and Sodium. Support beyond these mods is provided on a best effort basis.

Compatibility

Mod Loaders

Client Fabric Server

Game Versions

26.3

Recommended Gear

Affiliate

Hardware and extras that pair well with this mod.

Mini PC for self-hosting

Mini PC for Self-Hosting

A low-power box that can sit in a cupboard and run a modded server around the clock.

View on Amazon →

As an Amazon Associate I earn from qualifying purchases.

Similar Mods

Just Enough Items (JEI)

Just Enough Items (JEI)

View Items and Recipes

Mod 729,652,572
Cloth Config API (Fabric/Forge/NeoForge)

Cloth Config API (Fabric/Forge/NeoForge)

Config Screen API for Minecraft

Mod 570,982,654
Mouse Tweaks

Mouse Tweaks

Enhances inventory management by adding various functions to the mouse buttons.

Mod 550,366,770
Fabric API

Fabric API

Core API library for the Fabric toolchain

Mod 525,687,367
AppleSkin

AppleSkin

Adds some useful information about food/hunger to the HUD

Mod 520,874,831
GeckoLib

GeckoLib

A 3D animation library for entities, blocks, items, armor, and more!

Mod 505,400,711 354.7K this week

Included in Modpacks (1,024)

Show fewer
KITTENTHEIII's VR MODPACK KITTENTHEIII's VR MODPACK Vanilla QOL Improved Vanilla QOL Improved StickCraft Gamepad Edition StickCraft Gamepad Edition Borukva Modpack Borukva Modpack emad modpack emad modpack HugoSMP HugoSMP Cobblemon Optimized [FABRIC] Cobblemon Optimized [FABRIC] ApolloOptimized ApolloOptimized Chill Chill SVC Server Modpack SVC Server Modpack DirtTW's Basement Optimize Pack DirtTW's Basement Optimize Pack Optimized Core Optimized Core Useful Client-Side Tweaks Useful Client-Side Tweaks Wynncraft DELUXE Wynncraft DELUXE Lunar Optimized Lunar Optimized Pixel Craft Pixel Craft Wynncraft Refined Fruma Additions Wynncraft Refined Fruma Additions Vulkan Chapter Of Potato PVP Vulkan Chapter Of Potato PVP Servidor Universo PokeNet | Cobblemon Servidor Universo PokeNet | Cobblemon Ion Ion Chronicles of Arda Chronicles of Arda Dylan's Awesome Mod Pack Dylan's Awesome Mod Pack Sitrus Cobblemon - [PC] Sitrus Cobblemon - [PC] Project AZOTH Cobblemon Modpack Project AZOTH Cobblemon Modpack Fever fps Fever fps Gateways Gateways Tinycraft Tinycraft mistview's pvp modpack mistview's pvp modpack Better Than Basics Better Than Basics Vulkanium Vulkanium TchicX Modpack TchicX Modpack Better & Enhanced: Client Edition Better & Enhanced: Client Edition BareBonesCraft+ BareBonesCraft+ Perfectly Optimized (Fabric) Perfectly Optimized (Fabric) Electricity Generation Integration Package Electricity Generation Integration Package NeebsCraft NeebsCraft BasicPackage BasicPackage EVON'S BETTER CRAFT EVON'S BETTER CRAFT CobbleKingdoms CobbleKingdoms Growth VR Growth VR Optimus Optimus Coperium Enhanced Coperium Enhanced Mods MC Mods MC Cobblemon Unbound Cobblemon Unbound NovaMTR Modpack NovaMTR Modpack Savaru IV - Kohtalon Mies Savaru IV - Kohtalon Mies StormForge Pack StormForge Pack Smooth Journey Smooth Journey Dyonizel Modpack Dyonizel Modpack Nomurras Terror Nomurras Terror Pvp Optimizer Pvp Optimizer Strawberry Flavored Strawberry Flavored Donut Vanilla Donut Vanilla Stay-Clear! Stay-Clear! Create Delight Create Delight FPS+ FPS+ The Ultimate PVP Modpack The Ultimate PVP Modpack Visual Vanilla Visual Vanilla Yeemo Yeemo SimpleSurvival SimpleSurvival Kestramon Kestramon DeckCraft DeckCraft Azur Azur G-Craft G-Craft Just Optimised Just Optimised SaoWorld - Unofficial SaoWorld - Unofficial CastleQuest SMP CastleQuest SMP Essential Medieval [FABRIC] Essential Medieval [FABRIC] Marcadia Marcadia DanilDrem3 Vanila Optimized(FPS BOOSTER) DanilDrem3 Vanila Optimized(FPS BOOSTER) Optimization Foundation Optimization Foundation Journey's End Vanilla Journey's End Vanilla CreateMon (CobbleVerse x Create) CreateMon (CobbleVerse x Create) MC Enhanced [FABRIC] MC Enhanced [FABRIC] (Closed) CE Wandering Wilds (Closed) CE Wandering Wilds Sylix Cobblemon Sylix Cobblemon Joshua's optimization Joshua's optimization The Backrooms EVOLVED The Backrooms EVOLVED Unbelievabled FPS Unbelievabled FPS Optimize My Server! Optimize My Server! GregTech: VR Edition GregTech: VR Edition AstralPVP AstralPVP Riptidium Riptidium BTE Germany Modpack BTE Germany Modpack Vanilla Optimized Plus Vanilla Optimized Plus Sitrus Cobblemon - [MOBILE] Sitrus Cobblemon - [MOBILE] Cobblemon Vulkan (Performance Pack) Cobblemon Vulkan (Performance Pack) Semi Realistic Space Exploration Modpack Semi Realistic Space Exploration Modpack Vanilla Remaked Vanilla Remaked ATOMLAND Optimized ATOMLAND Optimized MCParks - The Unofficial Modpack MCParks - The Unofficial Modpack Zecoar Modpack Zecoar Modpack Client Refresh Client Refresh BlackRose's Shenanigans BlackRose's Shenanigans StaTech Industry: GoG StaTech Industry: GoG Maxed Optimized Maxed Optimized Liquid Client Liquid Client Bakumon Official Bakumon Official MysticCraft Divivded Kingdoms MysticCraft Divivded Kingdoms Kool Optimized Studio (BBS) Kool Optimized Studio (BBS)

External Resources

CurseForge Modrinth Source Code