UptimeRobot - Free Website Uptime Monitoring
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
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.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.