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.
Calamari - Calamari helps organizations, companies, and enterprises to manage their human resources in an easy and compliant way by delivering modern and easy-to-use time tracking and attendance management tools.
Pingbreak - Pingbreak is an original and free monitoring service.
Sage HR - Sage HR is a one-stop shop for your HR management needs. Your HR - simplified!
DownDetector - A simple service to tell you whether a website is down.
TimeOffManager - TimeOffManager.com provides a fully automated online system for tracking and managing employee absence, leave, paid time-off and attendance.