logit.io - Logit.io provides complete observability of logs, metrics and traces. The platform also offers alerting & monitoring, as well as Prometheus, OpenSearch & Grafana. Ingest any type of data to see real-time insights about your applications and services

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

Plumbr - Plumbr is an application performance platform that provides insights to users on the performance of their applications.

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.

AppOptics - Application performance management and infrastructure monitoring.

FastNetMon - FastNetMon is a very fast DDoS analyzer with sflow/netflow/mirror support.