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Discover top open-source software, updated regularly with real-world adoption signals.
Powerful Windows tool for monitoring, debugging, and malware detection
System Informer is a free, portable Windows utility offering detailed system activity, resource graphs, file‑lock detection, network connection management, and advanced debugging.
System Informer is a free, portable Windows application designed for IT professionals, developers, and power users who need deep insight into system performance and security. Running on Windows 10 or later (both 32‑bit and 64‑bit), it provides real‑time graphs, detailed process lists, and stack‑trace analysis without requiring installation.
The tool highlights resource‑intensive processes, shows which applications hold file locks, and enumerates active network connections with one‑click termination. Advanced debugging features include kernel‑mode, WOW64, and .NET stack traces, while service management goes beyond the built‑in Windows console. Because it is a single executable, it can be launched from a USB drive, and settings can be stored alongside the binary for portable use.
Users can download the pre‑built binary or compile the source with Visual Studio 2022 or later using the provided build scripts. The MIT license permits unrestricted modification and redistribution, making it suitable for both personal and commercial environments.
When teams consider System Informer, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Identify runaway processes draining CPU
Graphical CPU usage view quickly reveals offending processes, allowing termination to restore system responsiveness.
Detect which process locks a file
File lock viewer shows the exact process holding the file, enabling safe unlock or termination.
Analyze network connections of suspicious software
Network inspector lists active connections and lets you close malicious sockets in real time.
Debug kernel‑mode crashes with stack traces
Integrated stack trace viewer provides kernel and .NET call stacks, aiding developers in pinpointing root causes.
No, the executable is portable and can run directly from any folder or USB drive.
Windows 10 and later, both 32‑bit and 64‑bit editions.
Yes, it is released under the MIT license, allowing unrestricted modification and redistribution.
You need Visual Studio 2022 or newer; run the provided build scripts or open the solution files.
Create an empty file named SystemInformer.exe.settings.xml alongside the executable; the program will store its configuration there.
Project at a glance
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