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Advanced IP Scanner vs WhoIsConnectedSniffer: catalog facts
Advanced IP Scanner	WhoIsConnectedSniffer
Free Free, closed source, from Famatech. Development appears stalled; version 2.5.4594.1 dates…	Free Freeware from NirSoft; it may not be sold or bundled with commercial products.
Windows	Windows
Lists hostname, IP, MAC, manufacturer and shared folders in one sweep Runs portable, with no installation	Passive discovery that sends no packets to other devices Shows operating system, description and IPv6 address that scanners may miss
Windows only and closed source Last release was 2023	Requires the Npcap or Network Monitor capture driver Only detects devices that send packets the computer receives, and not on other subnets
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Freeware
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 8, 2026

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