Amazon AWS - Amazon Web Services offers reliable, scalable, and inexpensive cloud computing services. Free to join, pay only for what you use.
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.
DigitalOcean - Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
AppDynamics - Get real-time insight from your apps using Application Performance Management—how they’re being used, how they’re performing, where they need help.
Softlayer - Softlayer is the cloud computing platform that offers the services of computing, networking, storage security, and application development.
Zabbix - Track, record, alert and visualize performance and availability of IT resources