StackPath - Secure Content Delivery Network, DDoS, WAF Service
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Avast - Avast security software products are developed for Microsoft Windows, Mac OS X, Android and Linux users by AVAST Software.
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Flexera Software Vulnerability Manager - Flexera Software Vulnerability Manager provides solutions to continuously track, identify and remediate vulnerable applications.
Prometheus - An open-source systems monitoring and alerting toolkit.