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.
Sweeper - KDE is an open community of friendly people who want to create a world in which everyone has control over their digital life and enjoys freedom and privacy.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
BitRaser File Eraser - BitRaser File Eraser is a powerful software that permanently erases files, folders, Internet browsing history, saved login passwords, app traces, etc.
Better Uptime - We call you when your website goes down
Clean Temporary Places - Clean Temporary Places is a cleaning tool that lets you clean temporary files to free up some space on the disk and get rid of disk error, disk defragmentation, etc.