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Vistumbler vs NetSpot: catalog facts
Vistumbler	NetSpot
Free Free and open source under the GPLv2.	Freemium A limited free version is available. Pro and Enterprise editions are paid.
Windows	Windows, macOS
GPS logging to map where access points were found KML and GPX export plus live Google Earth tracking	Heat maps over a real floor plan, not just a list of signal strengths Discover mode is useful even without running a full survey
Windows only Works best when disconnected from access points while scanning	The free version limits zones, snapshots and visualisation types Windows and macOS only, closed source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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