Chrono Plus - Chrono Plus is a convenient task manager and time tracking tool with a host of handy features
TimeSnapper - TimeSnapper is an Automatic Screenshot Journal. Play back your week just like a movie.
hr - hr tracks your hours. It's minimalistic, clean and easy-to-use, yet powerful time tracking app...
ScreenMeter - Employee time-tracking software with automatic screenshots. $1 per user per month. Free trial.
Timings 3 - Timings - Track worktime on your Mac. Compatible with GrandTotal invoicing software.
Monitask - Employee Monitoring Software with Screenshots, Internet, Activity and Time Tracking