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NetSpot vs Sparrow-wifi: catalog facts
NetSpot	Sparrow-wifi
Freemium A limited free version is available. Pro and Enterprise editions are paid.	Free Free and open source.
Windows, macOS	Linux
Heat maps over a real floor plan, not just a list of signal strengths Discover mode is useful even without running a full survey	Wi-Fi and Bluetooth scanning in one GUI GPS and spectrum support
The free version limits zones, snapshots and visualisation types Windows and macOS only, closed source	Linux only Installed from source with Python dependencies
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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