Project SECURITY is a powerful website protection application that will keep your website safe from hackers, attacks and other threats.
Demo: https://codecanyon.net/item/project-security-website-security-antivirus-firewall/15487703
NinjaFirewall (WP + Edition) is a true web application firewall. Although it can be installed and configured as a plugin, it is a standalone firewall that sits in front of WordPress.
Demo: https://nintechnet.com/ninjafirewall/wp-edition/
WP Guard uses intelligent algorithms (similar to those used by large industrial companies) to detect all known hacker attacks as well as new unknown threats using code and pattern recognition, and automatically takes action.
Demo: https://codecanyon.net/item/wp-guard-wordpress-security-firewall-antispam/23753284