If you’re looking for an alternate application for Windows in-built task manager, then System Explorer perfectly fits your request. System Explorer comes bundled with all the functions supported by Windows Task Manager but with a new Security feature. It provides information about a process with CPU usage, disk usage, Network usage, PID (Process ID), Memory usage, and more. It even provides with a security column telling you about the security of that particular process with the links to details of that process and a link to check the security of that process.
If you’re really worried about the security of your system you can even perform a security scan with System Explorer, which performs the system scan through its database and give you details about your system processes.
I personally loved this application as Windows 8 (beta) built-in Task Manager doesn’t work properly for some reasons and System Explorer performs all the tasks which Window 8 Task Manager cannot.
Supported Operating Systems: Windows XP, Vista, 7 and 8