Process Explorer is a helpful utility program that details your computer's running processes in a more visual representation than the standard Windows Task Manager. A host of smart tools and design options are provided with this program, but some technical errors are likely to inhibit Process Explorer's abilities.
Pros
Customizable interface: While the interface is not very attractive, it provides all needed information in an uncomplicated manner, which is all you need for these types of applications. Process Explorer also features many design options to configure symbols and colors to help you build a more personalized and streamlined layout.
Awesome tools: Locating running programs is very easy with Process Explorer's fast search tool, and processes are easily killed with one click. The unique Internet search tool is incredibly clever because it allows you to see if certain processes are known for being harmful.
Cons
Broken objects: One major error that we found during our tests was that Process Explorer has a few broken links and features. One of the most important objects, the Help section, failed to load at all; and if this is a common occurrence, novice individuals may find this program to be too hard to use.
Stability problems: While this program runs very quickly, Process Explorer crashed twice during our tests of routine features, and we could not find any obvious reason for what caused the crashing. We do not see this as a large concern because Process Explorer reopened perfectly after each crash.
Bottom Line
Process Explorer definitely surpasses Task Manager in all categories, but the constant performance errors and missing links left us unsatisfied. Should these errors be repaired, we think that all types of individuals will find Process Explorer to be of some use.
Process Explorer is an advanced process management utility that picks up where Task Manager leaves off. It will show you detailed information about a process including its icon, command-line, full image path, memory statistics, user account, security attributes, and more. When you zoom in on a particular process you can list the DLLs it has loaded or the operating system resource handles it has open. The top always shows a list of the currently active processes, including the names of their owning accounts, whereas the information displayed in the bottom window, which you can close, depends on the mode that Process Explorer is in if it is in handle mode you will see the handles that the process selected in the top window has opened, if Process Explorer is in DLL mode you will see the DLLs and memory-mapped files that the process has loaded. Source