Logentries - Log Management & Analytics Made Easy
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.
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.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Amazon RDS - Easy to manage relational databases optimized for total cost of ownership.
Better Uptime - We call you when your website goes down