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.
CS183B - Startup Class - Stanford class taught by Sam Altman & guest speakers
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Classroomies - Watch Stanford CS & Startup lectures together
Better Uptime - We call you when your website goes down
Frond - A better way to build community online