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Vistumbler vs Sparrow-wifi: catalog facts
Vistumbler	Sparrow-wifi
Free Free and open source under the GPLv2.	Free Free and open source.
Windows	Linux
GPS logging to map where access points were found KML and GPX export plus live Google Earth tracking	Wi-Fi and Bluetooth scanning in one GUI GPS and spectrum support
Windows only Works best when disconnected from access points while scanning	Linux only Installed from source with Python dependencies
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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