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.
Time Doctor - Time Tracking and Time Management Software that is accurate and helps you to get a lot more done each day.
Paymo - Manage projects, track time, create invoices, and get paid online.
QuickBooks Time - Easily track time for effortless payroll, invoicing, and job costing—without the paperwork, guesswork, or hard work.
Qbserve - Freelance time tracking, invoicing, and productivity improvement
Hawk-I GPS Punch Clock - FREE Trial | Hawk-I GPS Punch Clock can help your business to save lots of time and money by tracking employees, budget and projects performance just from the phone and in real time as well as simplifying your payroll.