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inSSIDer vs Sparrow-wifi: catalog facts
inSSIDer	Sparrow-wifi
Freemium Free with an Oscium account. Advanced features require a paid subscription.	Free Free and open source.
Windows, macOS	Linux
Makes channel overlap and interference immediately obvious Client-level inspection of a chosen access point	Wi-Fi and Bluetooth scanning in one GUI GPS and spectrum support
Requires a free account to use at all Advanced features need the paid MetaGeek Plus subscription	Linux only Installed from source with Python dependencies
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
Account 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.