Look at that SaaS - Inspiration and resources for SaaS founders
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.
Satchel - Guides to the best SaaS tools
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Works with Stripe - A brand-new directory of apps that work with Stripe
Better Uptime - We call you when your website goes down