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.
Indatus - Indatus – A Creative Editor Making Your Photos Gorgeous an all-in-one photo-editing application developed by Thang Dinh.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
ClearStatus - Create your professional status page in minutes, free.
Better Uptime - We call you when your website goes down
StatusGator - Monitor all your hosted applications, vendors, and websites, and keep your team informed of outages. StatusGator is the world's premier status aggregator, status page, and website monitoring tool.