ManicTime - Track your computer usage and use collected data to accurately tag time.
ProcrastiTracker - Track and categorize your computer usage via recording of titlebar text.
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.
Arcoro - Arcoro is an elegant HR management software that allows you to streamline the business process faster and flexible.
Project Hamster - Project Hamster is time tracking for individuals.
Time Doctor - Time Tracking and Time Management Software that is accurate and helps you to get a lot more done each day.