The top always shows a list of the currently active processes, including the names of their owning accounts, If you point your mouse poiner over the process names you will see tooltip popup giving you the path of the file on the hard disk as well as full name of the process.
Process explorer also tries to verify each process against its publisher. You will see Process, Description, Company name and Verified Signer columns. This making process explorer an invaluable tool in finding out malicious/ harmful process and removing them.
You can download Process Explorer from this link