Wazuh - Open Source Host and Endpoint Security
logstash - logstash is a tool for managing events and logs.
Fortinet FortiAnalyzer - Fortinet FortiAnalyzer is a powerful product for Security Fabric Analytics and Automation.
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...
Riemann - Container Monitoring
Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.