WR Time Tracker 

WR Time Tracker is a simple, open source, web-based time tracking system. It works as a web service and allows you to: create user logins and organize them in teams, create and modify projects and activities, input work time, generate & send reports.
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TimeCEO 

TimeCEO is an automated time-tracking program for those who want to take control over time spent on the PC. TimeCEO offers the most comprehensive info about selected applications usage, in numerical and graphical formats.
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