Process Notifier is a freeware tool for Windows which can monitor any process and notifies you when the process is started or stopped. The app sends you a email with detailed information on the process when it is started, stopped or found. The tool sits in the system tray of Windows and monitors the process, but first you need to add the processes which you want to monitor. Moreover, it can be used to notify you when the machine is started or send desktop screenshots via E-mail.
You can also execute any other process based on the starting or stopping of another process. All the other settings can be configured using the system tray. You can send notification email using the app which can be configured.
You can also set the scan interval from the system tray and at any time, you can also pause the monitoring.
Process Notifier is a nice free tool to keep a watch on your programs running on Windows.