Nova AntiCheat is a free, open source 1.8 anti-cheat system designed for Spigot servers. This anti-cheat is a WIP (work-in-progress) and is currently in the BETA stage. I do not recommend using Nova for your production server.
Nova features a 3.05+ reach check (potential for true 3.01), 99% velocity checks, and advanced aim checks which use methods not previously found in open-source anti-cheats, such as:
- Partial enforcing of default sensitivity protocol
- Using a precise location of the target tracked through transactions to measure aim/tracking accuracy.