Microsoft SysInternals Process Explorer Version 15.23
Portable Freeware System Utility (WIN)
Release Date: 2012.10.03
Pros: Does everything Windows Task Manager does. Shows process relationships in tree form. Identifies DLLs and handles used by a process. Can determine which process has opened a particular file. Highlighting identifies process types and newly launched/terminated processes. Free!
Cons: May be too complex for inexperienced users.
Bottom Line: Have you ever called up Task Manager to kill a balky program, scope out what’s sucking CPU cycles, or scan for a suspicious process? Try Process Explorer instead. It does everything Task Manager can do and more. Best of all, it’s free.
Any teenager knows what to do when a PC-based game totally locks up—hit Ctrl+Alt+Del to bring up Windows 7’s Task Manager, kill the stuck application, and launch it again. Power users will click the CPU column twice to see which processes are sucking up the most CPU cycles, or scan the process list for suspicious items. But why use Task Manager when the Process Explorer 11 (free, direct) does so much more?
Process Explorer is a total replacement for Task Manager—you can even configure it to appear in place of Task Manager in response to Ctrl+Alt+Del. It includes all of Task Manager’s features, like the ability to launch any program or invoke any of the system’s shutdown modes, but the central hub of the program is its highly-evolved process list.
Process Tree
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Where Task Manager offers a simple linear list, Process Explorer organizes running processes into a tree structure that reflects how each process came to be launched. If process X launched process Y then process Y will appear as a “branch” below process X. Process Explorer also uses color to highlight processes that have just launched or just terminated. Other colors distinguish specific process types including services and “packed images”—this second category is often malicious. You can still sort by any of the data columns, as in Task Manager, and return to the process tree view at any time.
Of course, you can right-click and kill a process as in Task Manager, with the obligatory warning that killing a process can destabilize the system. Process Explorer’s added ability to kill a process and all of its descendant processes may forestall stability problems. Process Explorer can also suspend a process’s execution and resume it later. Say you’ve got a number-crunching utility that’s tying up the CPU and you want to stop for a minute while you check your e-mail. With Process Explorer, you can suspend the app briefly without going through the hassle of shutting it down and starting all over again after checking your mail.
Task Manager helps you figure out what program a given process represents by displaying its internal description, if available. Process Explorer goes a step farther by adding the company name. Still puzzled? Double-click the process and click the “Strings” tab in the resulting properties dialog—it lists all text strings found embedded in the process’s executable file. The properties dialog also reveals the full pathname and command-line for the process, lists and graphs performance statistics, and even displays TCP/IP activity.
Selecting the process corresponding to an on-screen window is a snap—just drag the utility’s crosshair icon onto the window. You can also enable a lower pane that lists all DLLs used by the selected process or all handles opened by that process. And a search option makes it easy to get a list of all programs currently using a specific DLL or identify which program is holding a certain file open.
System Information
The main Process Explorer window includes small real-time graphs showing CPU, memory, and I/O usage. You can click any one of them to widen it, but for a serious dose of system statistics you’ll launch the System Information page. This page displays expanded versions of the four resource usage charts, with an option to display usage for multiple CPUs in separate graphs. It goes well beyond the Performance page in Task Manager.
Process Explorer replaces Task Manager and does a better job in every way, and it’s free for commercial and non-commercial use (as long as you don’t try to redistribute it). It’s an essential tool for any power user’s utility collection.
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx