Coolmon is a great little freeware application that monitors and displays various Windows settings. Among the information that can be displayed are Processor usage (up to four CPU's) , Number of Processes , Number of Threads, Process using the most CPU time , Processor type , Used/Free/Total page file , Used/Free/Total RAM , Free/Total/Grand Total Disk space (up to sixteen disks, also mapped network drives) , Computer Uptime , Date & Time , Computer name , User name , All IP addresses , Network read and write speed (up to four NICs) , Total Bytes sent and received and Battery status.
Update The Coolmon website is no longer available, which also means that the program can't be downloaded anymore. The project appears to have been abandoned by its author.
I suggest you take a look at the following alternatives, which provide the same, or even an improved functionality.
Speccy is a free program that displays all kinds of hardware related information after it has been launched. From the hardware built-into the PC, to temperatures and other sensory information. If you want, you can view extensive information about each individual piece of hardware, like the RAM, cpu or motherboard.
System Information is an alternative. From the looks of it, I'd say that it displays even more information than Speccy does. Besides that, it offers software related information as well, including installed software and hotfixes, running processes, open files, installed codecs and a plethora of additional data.
Speccy is available as a portable version and setup version for Windows. I recommend you install the slim version or run the portable version of the application as they both ship without toolbar offers that the regular version ships with. You find those alternatives on the download builds page.
The program displays hardware and software information, as well as other information that you may find useful like information about the network and real-time information.
Open Hardware Monitor is more a monitoring software than it is one that displays extensive hardware related information. You can use it to display sensory information, including temperatures, fans, SMART sensors, and sensors from cpu and motherboard. It provides an excellent overview of a system's temperatures and fan speeds, and if you have configured it that way, of the health of the connected hard drives.
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.