Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

ActivTrak - Understand how work gets done. Collect logs and screenshots from Windows, Mac OS and Chrome OS computers.

Zabbix - Track, record, alert and visualize performance and availability of IT resources

Amazon GuardDuty - Amazon GuardDuty offers continuous monitoring of your AWS accounts and workloads to protect against malicious or unauthorized activities.

Abusix - Abusix is a network security company that offers email threat protection and network abuse handling solutions to ISPs, Telcos, and Cloud/Hosting Providers to stop the rapidly growing problem of email-borne threats and other kinds of network abuse.

Lookout - Lookout is a cybersecurity company that predicts and stops mobile attacks before harm is done to an individual or an enterprise.