Quotemarks - Quotation application.
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.
nuTab - Capture your thoughts and favorite links on the new tab page
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Minimo - An elegant, simplified new tab page
Better Uptime - We call you when your website goes down