Process Explorer v14.01
By Mark Russinovich
Okay, so. This is in fact a tool I personally use allot when testing various applications, it gives a very very good and detailed picture of whats going on with your processes and applications and whatnot. All in all, its a great tool when doing application testing, testing applications you don't trust etc, and want to see what its doing in terms of network, dlls, file system, resource usage and so on.
Ever wondered which program has a particular file or directory open? Now you can find out. Process Explorer shows you information about which handles and DLLs processes have opened or loaded.
The Process Explorer display consists of two sub-windows. The top window always shows a list of the currently active processes, including the names of their owning accounts, whereas the information displayed in the bottom window depends on the mode that Process Explorer is in: if it is in handle mode you'll see the handles that the process selected in the top window has opened; if Process Explorer is in DLL mode you'll see the DLLs and memory-mapped files that the process has loaded. Process Explorer also has a powerful search capability that will quickly show you which processes have particular handles opened or DLLs loaded.
The unique capabilities of Process Explorer make it useful for tracking down DLL-version problems or handle leaks, and provide insight into the way Windows and applications work.
Taken from https://technet.microsoft.com/en-us/sysinternals/bb896653
Download link: https://download.sysinternals.com/Files/ProcessExplorer.zip
EXE download link: https://live.sysinternals.com/procexp.exe