WorkCounter

WorkCounter counts time spent in work. It counts and sums up time when the computer is unlocked within a given day. When the day changes the overtime is calculated as the sum of previously calculated overtime plus work time from a given day minus working day as you define it.
Suspend, hibernate, screen save and time change events are handled asynchronously.
IPv4 address change is recognized and work is counted only when the IP address is from the provided range.
The program may keep track of applications active in the foreground. Every 5min there is a check which is the foreground window. Weekly or monthly stats are available (including foreground application stats).
Activity counting may exclude defined applications or could be enabled only when certain applications are active in the foreground.
External programs could be defined to be started when time limits are reached for tracked applications.
Important: false positive detection by antyvirus software - not able to fix it