Wazuh - Open Source Host and Endpoint Security
OpenNMS - Project home page of OpenNMS - a java based network managememnt platform developed under the Open Source model
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.
The Dude - MikroTik is a Latvian company which was founded in 1996 to develop routers and wireless ISP systems. MikroTik now provides hardware and software for Internet connectivity in most of the countries around the world.
Fluentd - Fluentd is a cross platform open source data collection solution originally developed at Treasure Data.
NetXMS - NetXMS is an enterprise grade multi-platform open source network management and monitoring system.