Fluentd - Fluentd is a cross platform open source data collection solution originally developed at Treasure Data.
Beats - Beats is the platform for single-purpose data shippers that is installed as lightweight agents and send data to machines to Logstash or Elasticsearch.
Wazuh - Open Source Host and Endpoint Security
Fortinet FortiAnalyzer - Fortinet FortiAnalyzer is a powerful product for Security Fabric Analytics and Automation.
Sematext Logagent - Logagent is a robust, flexible, open-source, and cloud-native data shipper for Application, Server, and Container Logs.
logstash - logstash is a tool for managing events and logs.