CheckHacks vs Nimbus AntiCheat

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.

Nimbus AntiCheat is a free plugin for detecting cheats on Minecraft servers. Its movement prediction and packet inspection power 43 individually configurable checks across movement, combat, world, packet, and inventory categories. The checks account for conditions such as latency, server lag, movement buffs, teleports, knockback, flight toggles, and join grace. Detection and staff alerts are enabled by default; operators configure punishments before they are used. Available actions include configurable commands, kicks, temporary or permanent bans, freezes, setbacks, and cancellation of illegal actions. Staff tools include player reports, an inspection GUI, in-game check controls, violation logs, and commands for testing alerts and punishments. PacketEvents is required; PlaceholderAPI, Discord webhooks, Citizens, LiteBans, and a permissions plugin are optional integrations. Nimbus requires Java 21 and targets Paper 1.21.x; it was built and tested against Paper 1.21.8, while other 1.21.x builds are untested. It supports Java-edition players, not Bedrock or Geyser players.