Freedom251 › Minecraft Anti-Cheat Plugins
GrimAC
What GrimAC is
GrimAC is a free Minecraft server anti-cheat plugin for Bukkit, Spigot, Paper and most forks, Folia, and Fabric. It covers Minecraft versions 1.8–26.1. Detection areas include movement, reach, NoFall, timer behavior, AntiKnockback, NoSlow, scaffold and block placement, bad packets, and crashes. Server staff can receive in-game alerts or Discord webhooks, kick players, and run custom commands when action is needed. Replay analysis is available for reviewing detected activity. Grim 2.0 is open source with community support and no limits. The planned Grim Premium tier lists private checks, heuristic checks, cloud features, staff support, and Bedrock support. Grim Enterprise lists custom limits, team management, priority staff support, and custom integrations through a contact-based arrangement. GrimAC therefore combines broad version coverage with several response options for communities managing player behavior on supported server software.
Who it suits
It suits Minecraft server operators using the listed platforms and versions who need detection across movement, combat, placement, packet, and crash-related behavior. The enforcement and replay tools also fit teams that want configurable moderation responses.
What it does well
- Free plan available
- Supports Bukkit, Folia, and Fabric
- Covers Minecraft 1.8–26.1
- Replay analysis included
- Custom enforcement commands
What to know first
- Premium and Enterprise pricing unlisted
- Bedrock support listed for Premium
- Coverage depends on supported server platforms
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Grim 2.0 | Open source · Community support · No limits | On request |
| Grim Premium | Coming soon · Private checks · Heuristic checks · Cloud features · Staff support · Bedrock support | On request |
| Grim Enterprise | Contact us · Custom limits · Team management · Priority staff support · Custom integrations | On request |
As grim.ac lists them, read 19 Sept 2026. The maker's own page has the final word.
Verdict
GrimAC offers a free route to broad Minecraft server detection, with alerts, kicks, webhooks, commands, and replay review.
Where GrimAC stands on Freedom251
- Minecraft Anti-Cheat Plugins#37 of 57
- Minecraft anti-cheat plugins#40 of 53