1)   SimpleActivityLogger 1.1
Log system events such as startup, shutdown, logon, logoff, lock, unlock, StartScreenSaver and StopScreenSaver. Useful for tracking your computer usage during the course of a day for billing purposes or for checking for unauthorised usage.
SimpleActivityLogger, Winlogon, Notification Events, Lock, Logoff, Logon, Shutdown, StartScreenSaver, StartShell, Startup,