Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
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.
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
Chef - Automation for all of your technology. Overcome the complexity and rapidly ship your infrastructure and apps anywhere with automation.
LogicMonitor - LogicMonitor is the SaaS performance monitoring platform for the world's best IT teams. Deploy Fast, Monitor More, Improve Ops.