Popular option for intrusion detection system platforms is Suricata. Like Snort, Suricata is open-source and provides real-time traffic analysis and packet logging to identify malicious activity. One unique feature of Suricata is its ability to run on multiple operating systems, including Windows, Linux, and macOS. Suricata also includes a set of standard rules, and users can create custom rules as needed. The platform also has a robust user community and offers extensive documentation and support.