Fluentd - Fluentd is a cross platform open source data collection solution originally developed at Treasure Data.
Barracuda Email Security Gateway - Barracuda's Email Security Gateway is a powerful antivirus filter specifically designed to identify and eliminate email-borne threats, stopping hazards before they reach the network.
logstash - logstash is a tool for managing events and logs.
Proofpoint Email Security and Protection - Learn about Proofpoint's email security solutions that protect organizations against threats such as email fraud, phishing, spam, bulk email, and viruses.
Wazuh - Open Source Host and Endpoint Security
Cisco Email Security - Cisco Email Security protects against ransomware, business email compromise, spoofing, and phishing.