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Sparrow-wifi vs inSSIDer: catalog facts
Sparrow-wifi	inSSIDer
Free Free and open source.	Freemium Free with an Oscium account. Advanced features require a paid subscription.
Linux	Windows, macOS
Wi-Fi and Bluetooth scanning in one GUI GPS and spectrum support	Makes channel overlap and interference immediately obvious Client-level inspection of a chosen access point
Linux only Installed from source with Python dependencies	Requires a free account to use at all Advanced features need the paid MetaGeek Plus subscription
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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