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Mac Monitor vs FileActivityWatch: catalog facts
Mac Monitor	FileActivityWatch
Free Free and open source on GitHub.	Free Freeware from NirSoft with no paid tier.
macOS	Windows
Records Endpoint Security events like ProcMon does on Windows Graphical view of enriched system events	Links each file operation to the process that made it Folder and drive summary modes
macOS only Relies on a system extension that must be approved	Requires running as Administrator Windows only
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License: Freeware
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 8, 2026

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