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Krypton

Modrinth

A mod to optimize the Minecraft networking stack

46.2M downloads5.8K followersUpdated 1mo ago

0.3.2 · MC 26.3 · Fabric

View on Modrinth

Files

  • 0.3.2

    release

    Krypton 0.3.2

    26.3fabric

    2026-09-30 · 538.8K downloads

    krypton-0.3.2.jar · 263 KB

  • 0.3.1

    release

    Krypton 0.3.1

    26.2fabric

    2026-07-14 · 959.5K downloads

    krypton-0.3.1.jar · 263 KB

  • 0.3.0

    release

    Krypton 0.3.0

    26.1.226.1.126.1fabric

    2026-04-21 · 1.1M downloads

    krypton-0.3.0.jar · 262 KB

  • 0.2.10

    release

    Krypton 0.2.10

    1.21.111.21.101.21.9fabric

    2025-10-05 · 6.1M downloads

    krypton-0.2.10.jar · 264 KB

  • 0.2.9

    release

    Krypton 0.2.9

    1.21.81.21.71.21.61.21.5fabric

    2025-03-29 · 3M downloads

    krypton-0.2.9.jar · 264 KB

  • 0.2.8

    release

    Krypton 0.2.8

    1.21.41.21.31.21.21.21.1+1fabric

    2024-06-22 · 17.4M downloads

    krypton-0.2.8.jar · 157 KB

  • 0.2.7

    release

    Krypton 0.2.7

    1.20.61.20.5fabric

    2024-04-30 · 249.1K downloads

    krypton-0.2.7.jar · 160 KB

  • 0.2.6

    release

    Krypton 0.2.6

    1.20.41.20.31.20.2fabric

    2024-01-02 · 1M downloads

    krypton-0.2.6.jar · 163 KB

  • 0.2.5

    release

    0.2.5

    1.20.41.20.31.20.2fabric

    2023-12-30 · 4.9K downloads

    krypton-0.2.5.jar · 163 KB

  • 0.2.4

    release

    0.2.4

    1.20.41.20.31.20.2fabric

    2023-09-23 · 174K downloads

    krypton-0.2.4.jar · 162 KB

  • 0.2.3

    release

    0.2.3

    1.20.11.20fabric

    2023-06-10 · 12.9M downloads

    krypton-0.2.3.jar · 182 KB

  • 0.2.2

    release

    0.2.2

    1.19.4fabric

    2023-03-16 · 394.7K downloads

    krypton-0.2.2.jar · 181 KB

  • 0.2.1

    release

    0.2.1

    1.19.31.19.21.19.1fabric

    2022-07-30 · 1.3M downloads

    krypton-0.2.1.jar · 171 KB

  • 0.2.0

    release

    0.2.0

    1.19fabric

    2022-06-08 · 619.4K downloads

    krypton-0.2.0.jar · 143 KB

  • 0.1.9

    release

    0.1.9

    1.18.21.18.1fabric

    2022-03-09 · 268.2K downloads

    krypton-0.1.9.jar · 129 KB

  • 0.1.7

    release

    0.1.7

    1.18.21.18.1fabric

    2022-03-01 · 2.3K downloads

    krypton-0.1.7.jar · 127 KB

  • 0.1.6

    release

    0.1.6

    1.18.1fabric

    2021-12-11 · 7.8K downloads

    krypton-0.1.6.jar · 126 KB

  • 0.1.5

    release

    0.1.5

    fabric

    2021-11-30 · 7.7K downloads

    krypton-0.1.5.jar · 126 KB

  • 0.1.4

    release

    0.1.4

    1.17.1fabric

    2021-07-06 · 83.1K downloads

    krypton-0.1.4.jar · 124 KB

  • 0.1.3

    release

    0.1.3

    1.17fabric

    2021-06-08 · 21.7K downloads

    krypton-0.1.3.jar · 124 KB

  • 0.1.2

    release

    0.1.2

    1.16.51.16.41.16.31.16.2fabric

    2021-02-11 · 272.1K downloads

    krypton-0.1.2.jar · 115 KB

  • 0.1.1

    release

    0.1.1

    1.16.51.16.41.16.31.16.2fabric

    2021-01-20 · 1.5K downloads

    krypton-0.1.1.jar · 118 KB

  • 0.1.0

    release

    0.1.0

    1.16.41.16.31.16.2fabric

    2020-12-21 · 822 downloads

    krypton-0.1.0.jar · 105 KB

Files are delivered unmodified from Modrinth's servers and verified against the SHA-512 hash published by the project. The project's license applies to every file; check it before redistributing.

About

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 seen 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.

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.