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
How to Acquire More Users - The growth guide used by Y Combinator companies
Better Uptime - We call you when your website goes down
Velocity.js - Velocity is a JavaScipt animation engine.