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Vistumbler vs inSSIDer: catalog facts
Vistumbler	inSSIDer
Free Free and open source under the GPLv2.	Freemium Free with an Oscium account. Advanced features require a paid subscription.
Windows	Windows, macOS
GPS logging to map where access points were found KML and GPX export plus live Google Earth tracking	Makes channel overlap and interference immediately obvious Client-level inspection of a chosen access point
Windows only Works best when disconnected from access points while scanning	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: GPL-2.0	License not stated
No account needed	Account 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.