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    2,054,198 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 Oct 2026.636,163 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 25 Oct 2026.269,438 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Krypton Hybrid

    Mod

    Faster server connections with better compression and less network traffic.

    C65/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21.1
    • ModpacksIn 35
    • ReleasesLatest 17 May

    Download

    Krypton Hybrid-1.21.1-nepforge-0.2.33.jar

    Released 17 May 2026 · 7.9 MB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Security checks passed
    • Public source code
    • Widely used

    Points lost

    • Many modpacks removed it−9 points
    • Releases in only 3 of the last 24 months−4 points
    • First release only 8 months ago−4 points
    • No release in 5 months−3 points
    • Releases replaced within 3 days to fix a problem−3 points
    All 11 criteria

    • Maintenance

      7 points lost20 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.5 months ago (17 May 2026) 9 / 12
      Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.21.1 on NeoForge, 1.20.1 on Forge. 15% or more of the popular mods updated in the last 6 months also have files for 1.21.1. Latest Minecraft: 26.3. 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 3 of the last 24 months 2 / 6

    • Stability

      12 points lost10 / 22
      Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.11 of the 30 modpacks with two or more versions removed it in a later one (37%) See the 11 modpacks1 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.2 of its 9 releases in 2 years needed a quick fix (22%) See the 2 releases4 / 7
      Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5

    • Transparency

      Full points7 / 7
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · dreamforSh/KryptonHybrid 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.Does not apply. CurseForge links are not in our data.

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.206,552 4 / 4

    • Track record

      4 points lost4 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.8 months, 14 releases 4 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in both latest files for recent Minecraft versions. See Security
    Total65 / 100

    44.5 of the 68 points that apply = 65 out of 100. The points above are rounded to whole numbers.

    About

    Krypton Hybrid is a networking optimization mod for hybrid Minecraft servers, extending the legacy Krypton project with Netty and encoding improvements. It replaces the default compression path with native Zstandard compression and provides a zlib fallback, alongside optimizations for light data, chunk heightmaps and biome streams, and entity-tracking packets. A delayed chunk cache can avoid resending chunks when players quickly return to range, while consolidated network flushes and bundled entity packets reduce communication overhead. The mod also includes configurable network protections such as per-IP connection rate limiting, stage-aware timeouts, packet and handshake validation, anomaly detection, and safeguards against excessive pending writes. Operator commands report compression and bandwidth statistics and summarize packet, mod-traffic, and security metrics.

    Written from CurseForge and the GitHub README . How we write it

    In-game changes

    Changes the game's code in 4 areas: Networking and multiplayerChanges 19 game code files in this area: connections, the server list and what is sent between your game and a server., Chunk loading and storageChanges 4 game code files in this area: how the game loads, tracks, saves and unloads chunks., Mobs and their behaviorChanges 2 game code files in this area: mobs, animals, villagers, projectiles and how they move and act. and Server and world logicChanges 1 game code file in this area: the world, commands, scoreboards, saved data and game rules..

    Adds 2 key bindings: Open Krypton Stats Dashboard and Toggle Krypton HUD.

    Counted from the names and data files in the mod, so the list may not be complete.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Often used with it

    See all 30
    AllTheLeaks (Memory Leak Fix)AComplementary Shaders - UnboundAFastSuiteBBadOptimizationsAsparkA

    Details

    Creator
    dreamforSh
    License
    Not known
    Downloads
    207K
    Created
    1 Mar 2026
    Official page
    CurseForge
    Links
    Source code

    Security

    No harmful code found

    We checked its files and read their code, without running it.

    What it can do on your computer

    Starts other programs
    It can start another program on your computer, for example to open a link in your browser. Found in velocity-native, a library it includes.
    Creates settings files
    The mod keeps its settings in the config folder of your game, where you can change or delete them.

    Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.

    How we checked · All 3 latest files checked, last on 16 Oct 2026
    • FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.
      3 latest files: the newest file for each Minecraft version and loader. The answer above is about the 2 for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
    • Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.
      Read without running it
    • Starts other programs
      Purpose not known.
    • Looked for, not foundWe looked for these in the file and did not find them.
      The internet, folders outside the game, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    We read its code without running it: it contacts no web address while you play.

    Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.

    How we checked · Both files read
    • Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.
      The code of both files, for recent Minecraft versions. See each file in Releases

    AI

    No sign so far that AI was used to make it

    We looked for AI tools in its texts, files and images and found none.

    We have not read its code history yet.

    No sign of AI in the game

    We found no AI service, AI library or AI model file in its code.

    Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.

    How we checked · 4 places read
    • Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.
      Not on Modrinth.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Not read yet
    • Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.
      Nothing found
      10 of 28 changelogs read
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Nothing found
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Nothing found
      1 image read
    • Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.
      No AI service, AI library or AI model file
      198 code files read

    Compatibility

    See all 14 files
    NeoForge
    Forge
    1.191.2126.1

    Point at or tap a version to see its loaders.

    RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.Nothing
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.It has no file for Minecraft versions newer than 1.21.1. Many recently updated mods still support 1.21.1.

    Modpacks using this project

    Find modpacks with it

    35 modpacks include Krypton Hybrid in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Project - Arcane Frontier155K downloadslast version with it 18 Jun 2026FPS FLAME [FORGE] | Performance, Shaders and more21K downloadslast version with it 10 Oct 2026One Piece Grand Blue - (Mine Piece)17K downloadslast version with it 22 Aug 2026[TLWS]The Last World Shines11K downloadslast version with it 20 Apr 2026FEAR 0F DEATH7.4K downloadslast version with it 18 Sep 2026InfinityCraft Ultra4.2K downloadslast version with it 24 Mar 2026Trash Panda Twist3.7K downloadslast version with it 2 Aug 2026AdvoTech ValkyrienSkies3.2K downloadslast version with it 24 Aug 2026Kumo O Tagayasu2.1K downloadslast version with it 16 May 2026Farlands - Rising1.7K downloadslast version with it 8 Sep 2026
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Krypton Hybrid. Share: how many of the modpacks with Krypton Hybrid also have that mod.

    ProjectTypeShareGrade
    AllTheLeaks (Memory Leak Fix)AModin 69% of the modpacks with Krypton HybridComplementary Shaders - UnboundAShaderin 63% of the modpacks with Krypton HybridFastSuiteBModin 57% of the modpacks with Krypton HybridBadOptimizationsAModin 57% of the modpacks with Krypton HybridsparkAModin 57% of the modpacks with Krypton HybridAI Improvements: Performance TuningAModin 54% of the modpacks with Krypton HybridServer Performance - Smooth Chunk SaveAModin 51% of the modpacks with Krypton HybridCreate: Copycats+AModin 49% of the modpacks with Krypton HybridPacket FixerAModin 49% of the modpacks with Krypton HybridSodium Dynamic LightsCModin 49% of the modpacks with Krypton Hybrid
    1 to 10 of 30123

    Latest files

    The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    1.21.1·NeoForge0.2.330.2.33 · Krypton Hybrid-1.21.1-nepforge-0.2.33.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·NeoForge, Forge0.2.330.2.33 · Krypton Hybrid-1.20.1-forge-0.2.33.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.19.2·Forge0.2.300.2.30 · Krypton Hybrid-forge-1.19.2-0.2.30.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    14 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1The latest file for its Minecraft version and loader·NeoForge0.2.330.2.33 · Krypton Hybrid-1.21.1-nepforge-0.2.33.jar·17 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 7.9 MB
    1.20.1The latest file for its Minecraft version and loader·Forge, NeoForge0.2.330.2.33 · Krypton Hybrid-1.20.1-forge-0.2.33.jar·17 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 7.9 MB
    1.20.1·Forge, NeoForge0.2.320.2.32 · Krypton Hybrid-1.20.1-forge-0.2.32.jar·16 May 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 7.9 MB
    1.21.1·NeoForge0.2.300.2.30 · krypton hybrid-1.21.1-neoforge-0.2.30.jar·3 Apr 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 7.8 MB
    1.19.2The latest file for its Minecraft version and loader·Forge0.2.300.2.30 · Krypton Hybrid-forge-1.19.2-0.2.30.jar·29 Mar 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 8.0 MB
    1.20.1·Forge, NeoForge0.2.300.2.30 · Krypton Hybrid-forge-1.20.1-0.2.30.jar·29 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 8.0 MB
    1.21.1·NeoForge0.2.280.2.28 · krypton hybrid-1.21.1-neoforge-0.2.28.jar·28 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 7.7 MB
    1.19.2·Forge0.2.280.2.28 · Krypton Hybrid-forge-1.19.2-0.2.28.jar·7 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 8.3 MB
    1.20.1·Forge, NeoForge0.2.280.2.28 · Krypton Hybrid-forge-1.20.1-0.2.28.jar·7 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 8.3 MB
    1.20.1·Forge, NeoForge0.2.270.2.27 · Krypton Hybrid-forge-1.20.1-0.2.27.jar·3 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 8.3 MB
    1.19.2·Forge0.2.260.2.26 · Krypton Hybrid-forge-1.19.2-0.2.26.jar·2 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 8.3 MB
    1.20.1·Forge, NeoForge0.2.260.2.26 · Krypton Hybrid-forge-1.20.1-0.2.26.jar·2 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 8.3 MB
    1.20.1·Forge, NeoForge0.2.240.2.24 · Krypton Hybrid-forge-1.20.1-0.2.24.jar·1 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 1.6 MB
    1.19.2·Forge0.2.240.2.24 · Krypton Hybrid-forge-1.19.2-0.2.24.jar·1 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 1.6 MB

    Quick fixes

    In the last 2 years, 2 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 3 points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.2

    • Krypton Hybrid-1.20.1-forge-0.2.33.jar17 May 2026
    • Krypton Hybrid-forge-1.20.1-0.2.27.jar3 Mar 2026