nodo - Manage your daily tasks in the command line
Wazuh - Open Source Host and Endpoint Security
Commandline Challenge - Test your command line skills
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.
Design for Humans - An email course about emotional design
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...