Wazuh - Open Source Host and Endpoint Security
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
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.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.