Zabbix - Track, record, alert and visualize performance and availability of IT resources
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
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.
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
FastNetMon - FastNetMon is a very fast DDoS analyzer with sflow/netflow/mirror support.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.