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.
Time Sink - Time Sink helps you track how you spend your time on your Mac.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Strict Workflow - Enforces the Pomodoro time management technique by blocking distracting sites
Better Uptime - We call you when your website goes down
ChatterBlocker - ChatterBlocker is the prime software to reduce the nearby conversation’s distraction that allows you to focus on your work.