4 out of 5 stars (based on 1 review)
Security Onion is a free and open platform for threat hunting, enterprise security monitoring, and log management. It includes our own interfaces for alerting, dashboards, hunting, PCAP, and case management. It also includes other tools such as Playbook, osquery, CyberChef, Elasticsearch, Logstash, Kibana, Suricata, and Zeek.
they do offer “premium support” for their software (https://securityonionsolutions.com/support). However the software is trade-free available.