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.
5play.ru - 5play.ru enables you to download highly-rated Apps and Games for Android devices.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Altstore - A home for apps that push the boundaries on iOS
Better Uptime - We call you when your website goes down
iOSGODS! - iOSGODS!