Krypton
Modby tuxed
A mod to optimize the Minecraft networking stack
Type
Mod
CurseForge Downloads
36,498,638
CurseForge ID
428912
Modrinth Downloads
41,125,406
Modrinth ID
fQEb0iXm
Last Updated
Sep 12, 2026
Description
Warning
Krypton is a work-in-progress. I do not provide any guarantees about its stability, compatibility with other mods, or support for every possible setup out there. Support for this mod is provided on a "best-effort" basis. This is not my day job, it is a hobby growing out of related work I've done.
Sponsor Me!
Did this mod make your server playable? Chip in a bit of money so I can continue developing it.
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
Game Versions
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
As an Amazon Associate I earn from qualifying purchases.
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Included in Modpacks (885)
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Vanilla 2.0
AnstorePack
Nolini135's Vanilla
Clear Skies
Mundo Mods Reforged
SkyForge (Member Edition)
PacPack Voxydized Server
Vanguard Optimized
Agile Optimized
Vanilla Deluxe
Luconia Network Modpack
Altirk Cobblemon Modpack
Ruby Trade World
ScenicCraft
Cobblemon Harmony Modpack
Kingdomity's Vanilla+
Cobblemon Cobalt Edition
En+anced Plus
Pulse lite
Fireworks Optimization
Vanilla+ Fabric Server
Just Fantasy and Optimized
Onyx
oOZelephOo's Modpack
Mister Experience
OptimaVisuals
A Toca da Coruja Modpack - Lite
Extremely optimized
HiLand Optimization
Stonix
kringles ModPack
Liye
Vanilla+ by yoroff
Performance Enhanced
TopCraft
Arbitrium +
SFSMP Modpack
VanillaFast
Aizen Private Modpack
MustChill
Project Gherkin
EngeServer Companion Modpack
Refined
Arbitrium Q+
Opinionatedly Optimized
Fairly Optimized
Wynncraft Xtra
Oddymized
VanillaFlow
Apex optimized
Super0ptimizati0n
Vanilla & Voyage
Great MC
iiZo7al PvP
Universe1
andrzejczakpack
OptiMizaPion
Snibbi's Modpack
Ultimate Client ModPack
Hyn Server
Cakeman's Enhanced Vanilla
Apex Essentials
Fabulous Fabric+
MCNS ModPack - Complete Edition
Chill&Stay
Lexes - Reimagined
Vanilla Refreshed
Feather
ReFabricated
Vanilla Exploring+
Shah Optimization
EwServer
Ohne-Schnickschnack-Server
Mythara Optimized
VanillaBoostP
Fabricated
Extra Optimized QoL
Arbitrium
X-Factor Optimization
More Than Optimized
CobblemonPlus+
Dolle Mods
Vanilla++
The Hearth Pack
Vanilla PLUS PLUS