Syslog-ng - Syslog-ng decreases the quantity and improves the quality of data, thus enhancing the capacities of your SIEM solution.
Wazuh - Open Source Host and Endpoint Security
Fortinet FortiAnalyzer - Fortinet FortiAnalyzer is a powerful product for Security Fabric Analytics and Automation.
Fluentd - Fluentd is a cross platform open source data collection solution originally developed at Treasure Data.
Riemann - Container Monitoring
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...