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    2,024,305 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 24 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 24 Oct 2026.269,486 projects gradedProjects with a letter from A to F. Counted on 24 Oct 2026.
    How it worksMalware we foundAPIAboutPrivacyTermsContact

    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Connectivity

    Mod

    Fix Login timeouts, Packet sizes errors, Payloads errors, ghostblocks and more.

    A99/ 100
    • OverviewA
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 26.3
    • ModpacksIn 20,236
    • ReleasesLatest 29 Sep

    Download

    connectivity-fabric-26.3-7.7.jar

    Released 29 Sep 2026 · 191.5 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • CupboardNo file for Minecraft 26.3 · FabricA
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade A

    How grades work

    Strengths

    • Regular releases for the newest Minecraft versions
    • Stable releases
    • Public source code
    • Widely used

    Points lost

    No points lost.

    All 11 criteria

    • Maintenance

      Full points27 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.4 weeks ago (29 Sep 2026) 12 / 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.26.3 (latest) on Fabric and NeoForge, 1.20.1 on Forge 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 9 of the last 24 months 6 / 6

    • Stability

      Full points22 / 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.43 of the 390 modpacks with two or more versions removed it in a later one (11%) 10 / 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 24 releases in 2 years needed a quick fix (8%) 7 / 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 · someaddons/connectivity 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.166,651,538 4 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.5.5 years, 153 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 14 latest files for recent Minecraft versions. See Security
    Total99 / 100

    67.7 of the 68 points that apply = 99.6, so 99 out of 100: only a project that lost no point gets 100. The points above are rounded to whole numbers.

    About

    Connectivity is a lightweight mod that addresses connection problems such as login and play timeouts, decoder errors, oversized packets and payloads, and ghostblocks. It also provides network-traffic statistics and commands for inspecting traffic rates and packet types, including tools to list packets by player or server-wide and print a large packet to the log. For troubleshooting, it adds detailed packet and error logging, network debugging utilities, and protection against malformed or malicious traffic.

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

    In-game changes

    Changes the game's code in 3 areas: Networking and multiplayerChanges 18 game code files in this area: connections, the server list and what is sent between your game and a server., Game coreChanges 3 game code files in this area: the main loop, lighting and other code the whole game uses. and Chunk loading and storageChanges 1 game code file in this area: how the game loads, tracks, saves and unloads chunks..

    Adds no new blocks, items or other content.

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

    Often used with it

    See all 30
    Server Performance - Smooth Chunk SaveAAttributeFixAsparkAfix GPU memory leakASodium Dynamic LightsC

    Details

    Creator
    someaddon
    License
    Not known
    Downloads
    167.1M
    Created
    12 Apr 2021
    Official page
    CurseForge
    Links
    Source code

    Security

    No harmful code found

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

    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 36 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.
      36 latest files: the newest file for each Minecraft version and loader. The answer above is about the 14 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
    • Looked for, not foundWe looked for these in the file and did not find them.
      The internet, folders outside the game, other programs, 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 · All 14 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 all 14 files, for recent Minecraft versions. See each file in Releases

    AI

    No sign that AI was used to make it

    We looked for AI tools in its texts, files, images, code history and pull requests and found none.

    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 · 7 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.
      Nothing found
      69 commits read
    • Pull requestsThe recent pull requests, comments, topics and README of the GitHub repository.
      Nothing found
    • 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
      28 of 40 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
    • Icon and galleryThe metadata of the original icon and gallery images of the project.
      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
      71 code files read

    Compatibility

    See all 153 files
    Fabric
    NeoForge
    Forge
    1.161.191.2126.1

    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.
    CupboardA
    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.About as fast as most mods. On average, it gets a file 50 days after a new Minecraft version comes out. Measured on the last 6 Minecraft versions.

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    2K1K0
    Oct 2024: 946 modpacksNov 2024: 887 modpacksDec 2024: 957 modpacksJan 2025: 1,078 modpacksFeb 2025: 1,057 modpacksMar 2025: 1,070 modpacksApr 2025: 1,177 modpacksMay 2025: 1,208 modpacksJun 2025: 1,121 modpacksJul 2025: 1,096 modpacksAug 2025: 1,079 modpacksSep 2025: 1,044 modpacksOct 2025: 1,118 modpacksNov 2025: 1,152 modpacksDec 2025: 1,165 modpacksJan 2026: 1,161 modpacksFeb 2026: 1,111 modpacksMar 2026: 1,101 modpacksApr 2026: 1,267 modpacksMay 2026: 1,354 modpacksJun 2026: 1,239 modpacksJul 2026: 1,316 modpacksAug 2026: 1,284 modpacksSep 2026: 1,225 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 2024946
    Nov 2024887
    Dec 2024957
    Jan 20251,078
    Feb 20251,057
    Mar 20251,070
    Apr 20251,177
    May 20251,208
    Jun 20251,121
    Jul 20251,096
    Aug 20251,079
    Sep 20251,044
    Oct 20251,118
    Nov 20251,152
    Dec 20251,165
    Jan 20261,161
    Feb 20261,111
    Mar 20261,101
    Apr 20261,267
    May 20261,354
    Jun 20261,239
    Jul 20261,316
    Aug 20261,284
    Sep 20261,225

    20,236 modpacks include Connectivity in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    All the Mods 10 - ATM1022.5M downloadslast version with it 15 Oct 2026Better MC [FORGE] - BMC421.1M downloadslast version with it 9 Oct 2026Prominence™ II: Hasturian Era15.4M downloadslast version with it 23 Oct 2026All the Mods 9 - ATM913.7M downloadslast version with it 12 Oct 2025DeceasedCraft - Urban Zombie Apocalypse9.8M downloadslast version with it 17 Jul 2026All the Mods 8 - ATM89.3M downloadslast version with it 17 Dec 2023Cursed Walking - A Modern Zombie Apocalypse8.7M downloadslast version with it 22 Sep 2023Cave Horror Project 18.2M downloadslast version with it 1 Oct 2026Better MC [FABRIC] BMC17.9M downloadslast version with it 20 Nov 2023All the Mods 6 - ATM66.5M downloadslast version with it 24 Jan 2024
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    Server Performance - Smooth Chunk SaveAModin 62% of the modpacks with ConnectivityAttributeFixAModin 56% of the modpacks with ConnectivitysparkAModin 53% of the modpacks with Connectivityfix GPU memory leakAModin 49% of the modpacks with ConnectivitySodium Dynamic LightsCModin 45% of the modpacks with ConnectivityStructure EssentialsAModin 43% of the modpacks with ConnectivityBetter Fps - Render DistanceBModin 43% of the modpacks with ConnectivityChippedCModin 42% of the modpacks with ConnectivityYUNG's Better Nether FortressesAModin 41% of the modpacks with ConnectivityAmendmentsAModin 40% of the modpacks with Connectivity
    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
    26.3·Fabric7.77.7 · connectivity-fabric-26.3-7.7.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    26.3·NeoForge7.77.7 · connectivity-26.3-7.7.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1 to 26.2·Fabric7.77.7 · connectivity-fabric-26.1-7.7.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1 to 26.2·NeoForge7.77.7 · connectivity-26.1-7.7.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·Fabric7.67.6 · connectivity-fabric-1.21.11-7.6.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·NeoForge7.67.6 · connectivity-1.21.11-7.6.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·Fabric7.67.6 · connectivity-fabric-1.21.10-7.6.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·NeoForge7.67.6 · connectivity-1.21.10-7.6.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.8 to 1.21.9·Fabric7.67.6 · connectivity-fabric-1.21.8-7.6.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.8·NeoForge7.67.6 · connectivity-1.21.8-7.6.jarSends: None foundRequires:CupboardPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 361234

    153 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    26.3The latest file for its Minecraft version and loader·Fabric7.77.7 · connectivity-fabric-26.3-7.7.jar·29 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 191.5 KB
    26.1 to 26.226.1 to 26.2The latest file for its Minecraft version and loader·Fabric7.77.7 · connectivity-fabric-26.1-7.7.jar·29 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 193.3 KB
    1.21.1The latest file for its Minecraft version and loader·Fabric1.21-7.71.21-7.7 · connectivity-fabric-1.21-7.7.jar·29 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 195.2 KB
    1.20.1The latest file for its Minecraft version and loader·Fabric7.77.7 · connectivity-fabric-1.20.1-7.7.jar·29 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 195.8 KB
    26.3The latest file for its Minecraft version and loader·NeoForge7.77.7 · connectivity-26.3-7.7.jar·29 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 111.5 KB
    26.1 to 26.226.1 to 26.2The latest file for its Minecraft version and loader·NeoForge7.77.7 · connectivity-26.1-7.7.jar·29 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 111.6 KB
    1.21.1The latest file for its Minecraft version and loader·NeoForge7.77.7 · connectivity-1.21.1-7.7.jar·29 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 113.2 KB
    1.20.1The latest file for its Minecraft version and loader·Forge, NeoForge7.77.7 · connectivity-1.20.1-7.7.jar·23 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 119.5 KB
    26.3·NeoForge7.67.6 · connectivity-26.3-7.6.jar·16 Sep 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 109.9 KB
    26.3·Fabric7.67.6 · connectivity-fabric-26.3-7.6.jar·16 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 189.8 KB
    26.1 to 26.226.1 to 26.2·Fabric7.67.6 · connectivity-fabric-26.1-7.6.jar·3 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 191.6 KB
    26.1 to 26.226.1 to 26.2·NeoForge7.67.6 · connectivity-26.1-7.6.jar·3 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 109.9 KB
    1.21.11The latest file for its Minecraft version and loader·Fabric7.67.6 · connectivity-fabric-1.21.11-7.6.jar·9 Mar 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 190.4 KB
    1.21.11The latest file for its Minecraft version and loader·NeoForge7.67.6 · connectivity-1.21.11-7.6.jar·9 Mar 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 109.9 KB
    1.21.10The latest file for its Minecraft version and loader·NeoForge7.67.6 · connectivity-1.21.10-7.6.jar·22 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 111.4 KB
    1.21.8The latest file for its Minecraft version and loader·NeoForge7.67.6 · connectivity-1.21.8-7.6.jar·22 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 111.4 KB
    1.21 to 1.21.11.21 to 1.21.1The latest file for its Minecraft version and loader·NeoForge7.67.6 · connectivity-1.21.1-7.6.jar·22 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 111.5 KB
    1.21.10 to 1.21.111.21.10 to 1.21.11The latest file for its Minecraft version and loader·Fabric7.67.6 · connectivity-fabric-1.21.10-7.6.jar·22 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 191.5 KB
    1.21.8 to 1.21.91.21.8 to 1.21.9The latest file for its Minecraft version and loader·Fabric7.67.6 · connectivity-fabric-1.21.8-7.6.jar·22 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on CurseForgeDownload · Stable · 193.4 KB
    1.20.1·Forge, NeoForge7.67.6 · connectivity-1.20.1-7.6.jar·22 Dec 2025PassedOur checks found nothing harmful in this file.Open this file on CurseForgeDownload · Stable · 117.8 KB
    1 to 20 of 15312345…8

    Quick fixes

    In the last 2 years, 2 releases needed a quick fix: a new release within 3 days to fix a problem. This counts in the grade, but it is too few to lose points.

    See them, newest first

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

    • connectivity-1.21.1-6.8.jar6 Feb 20256.8: Fix
    • connectivity-1.20.1-6.7.jar5 Feb 20256.7: Fix crashes/disconnects