Monitask - Employee Monitoring Software with Screenshots, Internet, Activity and Time Tracking
ManicTime - Track your computer usage and use collected data to accurately tag time.
ActivTrak - Understand how work gets done. Collect logs and screenshots from Windows, Mac OS and Chrome OS computers.
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.
TimeSnapper - TimeSnapper is an Automatic Screenshot Journal. Play back your week just like a movie.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.