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Grim AnticheatMinecraft plugin for 1.21

Fully async, multithreaded, predictive, open source, 3.01 reach, 0.01% speed, 1.8-1.21 anticheat

server onlynewest supported release 1.21
Latest version
2.3.72
Minecraft
1.8 to 1.21
Java
Java 21+
Platform
Spigot
Licence
not stated
Downloads
595.9k
Updated
8 mo ago
Available on
SpigotMC
Space NodeOur hosting

Host Grim Anticheat servers

One click and Grim Anticheat is installed on a Paper or Purpur server built for it.

  • 1.21
  • Spigot
  • One click plugin install
  • Paper and Purpur ready
  • Automatic updates
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Grim Anticheat declares support for, newest first, with the Java runtime that version needs.

Other plugins
MinecraftThroughJavaEvidenceReleased
1.21Spigot21+declared13 Jun 2024
1.20.6Spigot21+declared29 Apr 2024
1.20Spigot17+declared2 Jun 2023
1.19Spigot17+declared7 Jun 2022
1.18Spigot17+declared30 Nov 2021
1.17Spigot16+declared8 Jun 2021
1.16Spigot8+declared23 Jun 2020
1.12Spigot8+declared2 Jun 2017
1.8Spigot8+declared2 Sept 2014

Download

From Grim Anticheat’s own host. Nothing is re-hosted here.

For Minecraft 1.21

Choose the loader you use before downloading.

No matching file appears among the releases shown here. Browse all releases.

Most recently published release

2.3.72release26 Feb 2026

grim-anticheat.external

Download this release
Older versions24
  • 2.3.711 Jul 2025127.1k downloads
  • 2.3.6930 Jan 202586.2k downloads
  • 2.3.6817 Dec 202422.8k downloads
  • 2.3.6714 Sept 202435.6k downloads
  • 2.3.6617 Aug 202413.6k downloads
  • 2.3.6530 Jun 202425.1k downloads
  • 3.3.6423 May 202419.1k downloads
  • 2.3.6216 Apr 202415.5k downloads
  • 2.3.6123 Mar 20249.3k downloads
  • 2.3.6016 Mar 20243.3k downloads
  • 2.3.5927 Feb 20246.6k downloads
  • 2.3.5710 Feb 20247.0k downloads
  • 2.3.568 Feb 20241.1k downloads
  • 2.3.5526 Jan 20245.5k downloads
  • 2.3.548 Jan 20247.0k downloads
  • 2.3.5231 Dec 20233.3k downloads
  • 2.3.5131 Dec 2023375 downloads
  • 2.3.49-patch121 Dec 20234.4k downloads
  • 2.3.4915 Dec 20232.7k downloads
  • 2.3.4622 Oct 202315.9k downloads
  • 2.3.457 Sept 202314.0k downloads
  • 2.3.4316 Jun 202332.0k downloads
  • 2.3.4215 Jun 20231.1k downloads
  • 2.3.40 hotfix 15 Apr 202321.7k downloads

Frequently asked

Does Grim Anticheat work on Minecraft 1.21?

Yes. 1.21 is the newest Minecraft version Grim Anticheat declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Grim Anticheat support?

Everything the author has declared, from 1.8 up to 1.21. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Grim Anticheat on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does Grim Anticheat support?

Spigot. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Grim Anticheat?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

How do I install Grim Anticheat?

Choose the release variant for your server platform. Paper, Spigot, Purpur and Bukkit files go in the server's plugins folder; Fabric, Forge, NeoForge and Quilt files go in the mods folder. Restart after installing and check that the Minecraft version matches your server.

Where do I download Grim Anticheat safely?

Start with the author's page on SpigotMC, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from SpigotMC, where the author last updated it on 26 Feb 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .