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.
TestFlight - iOS beta testing on the fly.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Appaloosa-Store - Appaloosa helps businesses maximize the deployment of enterprise mobile apps. Deploy your enterprise app store for Apple iOS and Android apps to employees & testers.
Better Uptime - We call you when your website goes down
Topcoder - The Topcoder home page has received a slick new makeover that lets new customers quckly login, discover the power of our community, and launch challenges.