Wazuh is an open source SIEM/XDR security monitoring platform forked from OSSEC in 2015, integrating log analysis, file integrity monitoring, vulnerability detection, and compliance management with 10,000+ GitHub Stars.
BitNinja is a server security company from Budapest, Hungary, founded in 2016, offering one-click DDoS protection, a web application firewall, and signature-based attack detection for server users and hosting providers.
Sucuri (a GoDaddy company), founded in 2010 and headquartered in St. Louis, Missouri, specializes in website security protection and malware removal. Its remote malware cleanup service and cloud WAF are widely recognized among small to medium websites.