About Process Explorer
The story behind the most widely used process management tool for Windows, and why we built this resource.
What Is Process Explorer?
Process Explorer is a free Windows utility that shows you exactly what is happening inside your system at the process level. It displays every running process, the handles and DLLs each process has open, how much CPU and memory each one consumes, and the full parent-child process tree. Think of it as Windows Task Manager on steroids.
Developed by Mark Russinovich as part of the Microsoft Sysinternals suite, Process Explorer has become a go-to tool for system administrators, developers, and power users who need visibility that the built-in Task Manager simply does not provide. You can even configure it to replace Task Manager entirely.
Why does it matter? When a file is locked and you cannot figure out which program is holding it open, Process Explorer will tell you in seconds. When your system slows down and Task Manager only shows vague numbers, Process Explorer lets you drill into individual threads, DLLs, and handles to find the real cause.
History and Development
Process Explorer has a long history that traces back to the earliest days of Windows system internals tooling. Mark Russinovich began building system utilities in the late 1990s through his company Winternals Software, which he co-founded with Bryce Cogswell.
What Process Explorer Does
At its core, Process Explorer gives you a real-time, detailed view of your Windows system. But it goes well beyond what a standard task manager provides.
Process Tree View
See parent-child relationships between every running process, making it easy to trace which program spawned which.
Find Handle or DLL
Search across all processes to find which one has a specific file, registry key, or DLL locked open.
VirusTotal Integration
Submit any process or its DLLs directly to VirusTotal and see scan results from 70+ antivirus engines.
Color-Coded Processes
Green for new, red for terminated, pink for services, purple for packed images. Spot anomalies at a glance.
Live CPU & Memory Graphs
Per-process and system-wide CPU, memory, I/O, and GPU usage graphs updated in real time.
Suspend & Resume
Temporarily freeze a process without killing it, useful for debugging or stopping a runaway program.
IT professionals often rely on Process Explorer when diagnosing system slowdowns, tracking down malware, or identifying which application has a file locked. Unlike the built-in Task Manager, and even compared to alternatives like Process Hacker (now System Informer) or System Explorer, Process Explorer’s integration with Microsoft’s ecosystem and its VirusTotal scanning give it a unique edge for security-conscious environments.
The Developer Behind It
Process Explorer was created by Mark Russinovich, widely regarded as one of the foremost authorities on Windows internals. Russinovich co-authored the definitive book Windows Internals and has spent decades building tools that expose the inner workings of the Windows operating system.
Microsoft Sysinternals
Originally founded as Winternals Software by Mark Russinovich and Bryce Cogswell, the Sysinternals suite was acquired by Microsoft in 2006. Today Russinovich serves as CTO of Microsoft Azure, while the Sysinternals tools continue to be maintained and distributed for free through Microsoft Learn and the Sysinternals Live service.
The Sysinternals suite includes dozens of utilities beyond Process Explorer, such as Autoruns, ProcMon, TCPView, and BgInfo. Each tool is purpose-built, portable, and focused on a specific aspect of Windows system management.
What It Means to Users
For many Windows professionals, Process Explorer is the first tool they reach for when something goes wrong. It fills a gap that the built-in Task Manager was never designed to cover: deep, detailed, real-time visibility into exactly what every process on your machine is doing.
System administrators use it to troubleshoot locked files, identify rogue services, and verify that processes are running under the correct security context. Developers use it to debug handle leaks, trace DLL loading order, and profile CPU usage at the thread level. Security analysts rely on the VirusTotal integration to quickly assess whether a suspicious process is malicious.
Because Process Explorer is portable (no installation required), it is a fixture on USB toolkit drives and is frequently used in incident response scenarios where you need answers fast without modifying the target system.
About This Website
Independent Resource
processexplorer.net is an independent, fan-made informational website. We are not affiliated with, endorsed by, or connected to Microsoft, Microsoft Sysinternals, or Mark Russinovich in any way.
This site was built to help users find accurate information about Process Explorer, including download links, setup guides, feature explanations, and answers to common questions. All download links on this site point to official Microsoft sources.
We do not host, modify, or redistribute the software. We deeply respect the work of the Sysinternals team and encourage all users to visit the official Sysinternals website for the latest updates and documentation.
Get in Touch
Have a question or feedback about this website? Visit our Contact page.
For official Process Explorer support and documentation, visit Microsoft Learn.