QuickBooks Time - Easily track time for effortless payroll, invoicing, and job costing—without the paperwork, guesswork, or hard work.
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.
Buddy Punch - Cloud based time tracking, scheduling, and payroll solution that streamlines payroll for small and mid-sized businesses. Employees can punch in on their desktop or mobile devices.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Open Time Clock - Open Time Clock is a reliable, secure, cloud and web based time clock system that helps any size business manage time sheets.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.