NewRelic - New Relic is a Software Analytics company that makes sense of billions of metrics across millions of apps. We help the people who build modern software understand the stories their data is trying to tell them.

RightScale - RightScale enables organizations to easily deploy and manage business-critical applications across public, private and hybrid clouds.

Site24x7 - Site24x7 offers both free & paid website monitoring services. Monitor websites remotely and receive instant email/sms alerts if your website becomes unavailable. View uptime & performance graphs of your website monitors.

Scalr - Scalr is cloud management software for public & private infrastructure

Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.

Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.