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Process Explorer vs Sysinternals Suite: catalog facts
Process Explorer	Sysinternals Suite
Free Free to download and use, published by Microsoft as part of the Sysinternals suite. The…	Free Free to download from Microsoft.
Windows	Windows, Command line
Finds which process has a particular file or directory open Process tree shows parent and child relationships, not just a flat list	Dozens of diagnostic tools in one download Builds for ARM64 and Nano Server
Windows only Closed source, though published by Microsoft	Windows only Many tools assume familiarity with Windows internals
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.