Samhain is described as 'The Samhain host-based intrusion detection system (HIDS) provides file integrity checking and log file monitoring/analysis, as well as rootkit detection, port monitoring, detection of rogue SUID executables, and hidden processes' and is an app. There are more than 10 alternatives to Samhain for a variety of platforms, including Linux, Web-based, Mac, Windows and SaaS apps. The best Samhain alternative is Wazuh, which is both free and Open Source. Other great apps like Samhain are CrowdStrike Falcon, Ossec, Matano and AIDE.