Timestamp - Timestamp is real-time project, time and expense tracking in the cloud. Try Timestamp for free.
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.
InerTrak iPhone - InerTron Software
Time Doctor - Time Tracking and Time Management Software that is accurate and helps you to get a lot more done each day.
Mifort Timesheet - Provide teams of developers. We implement your ideas and support projects by our teams
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.