Zabbix - Track, record, alert and visualize performance and availability of IT resources
env0 - The Best Way to Manage Your Terraform and Infrastructure as Code Manage, deploy, scale, and control all your Terraform, Terragrunt, Pulumi, and related frameworks
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.
Scalr - Scalr is cloud management software for public & private infrastructure
Prometheus - An open-source systems monitoring and alerting toolkit.
Morpheus - Morpheus is integration software designed to help major cloud infrastructure work in harmony. For example, if a company has assets on both Google's and Amazon's cloud services, Morpheus helps bridge the gap to improve productivity.