Free mail access monitor serial software for windows

Access Monitor is a User Access Log utility designed for the Windows XP Operating Systems. Access Monitor is a User Access Log utility designed for the Windows XP Operating Systems.
Access Monitor will start up when the first user logs into Windows and continues to run until the computer is restarted or is shutdown. It runs in the background and resides in the system tray. Access Monitor records the date/time and username of any users that logs in/out, restarts or shut down the computer.
Access Monitors other main function includes a switch users/logoff/restart/shutdown menu. The Administrator of the computer will install Access Monitor and configure a password and other appropriate settings if applicable.
Main features:
- Records the date/time and username of users logging in/out of the computer
- Administrator can set the user access log size and also print the log
- Administrator password protection
- Resides in the system tray
- System tray icon can be hidden from basic users
- Provides a menu to immediately switch users/logoff/restart/shutdown the computer
System requirements:
- Processor speed - 266 mhz
- System Memory - 64 MB
- Internet Explorer 5.0

Device Monitor is a free utility that allows you to view the status and the program modbus devices connected to the serial port. Monitored parameters automatically updated based on the timer setting.
This tool is for Microtrend hardware modules, but can be used for any modbus modules. RPM, production, counters, voltage, current, temperature or any process parameter can be remotely displayed.

CPU Monitor is a simple, scalable and colorizable CPU graph.
Differs between system and user usage. On Mac OS X, you also get the nice usage.