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Process Explorer is a system resources monitoring tool for Windows operating systems. It follows the general lead of the built-in Windows Task Manager tool, but extends the feature set greatly. These expanded features allow profiling and modification of the real-time state of the system and grants access to otherwise inaccessible or hard to come by information such as showing which thread within a process is running, global searches for file and other open handles, parent-child relationships among processes, and other process-level minutia.