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.
Evercontact - Your contacts always up to date and automatically with Evercontact.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.
Better Uptime - We call you when your website goes down
Pobuca Connect - Connect with your contacts.