CheckHacks vs NoCheatPlus

CheckHacks is a free, server-side Minecraft anticheat that detects client-side mods and hack clients using the Sign Translation Vulnerability. Players do not need to install a client mod: the plugin briefly places signs with special translation keys and checks the client’s response. Administrators can choose METEOR, TRANSLATE, or KEYBIND detection modes for each mod and add custom detections in checkhacks.yml. DoubleCheck repeats scans that return DETECTED or PROTECTED to help reduce false positives. CheckHacks can check players after Grim, Vulcan, Spartan, or Matrix flags them, and supports custom commands and detection alerts. A browser editor running on the game server lets administrators review scan history, look up players, and start checks. Access uses one-time tokens, while scan records are kept in a built-in SQLite database. Named server platforms include Bukkit, Folia, Paper, Purpur, and Spigot, with Minecraft versions 1.21 and later listed. The maker warns that client patches can temporarily block the detection method. The project is MIT-licensed, and donations are optional.

NoCheatPlus is a free anti-cheat plugin for Minecraft Bukkit, Spigot, and CraftBukkit servers. It is designed to enforce vanilla mechanics and prevent abuse of Minecraft or its protocol. Checks cover movement, fighting, block breaking and placing, inventory behavior, chat and command spam, captcha use, enderpearl abuse, and other malicious activity. Movement checks include flying, speed, excessive packets, fall damage, no-clipping, and vehicle movement. Fight checks address fake critical hits, out-of-reach attacks, excessive hit rates, and invulnerability. Administrators can configure checks and apply actions such as cancellation, logging, server commands, bans, kicks, or denying login. The plugin offers API hooks for exemptions and violation processing. Installation consists of placing its JAR in the server plugins folder and starting Spigot or CraftBukkit. ProtocolLib is required for some network checks, including attack-frequency monitoring. Supported Minecraft versions listed range from 1.7.10 through 1.12.2. The project is GPL-3.0 licensed.