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TCP Viewer vs SmartSniff: catalog facts
TCP Viewer	SmartSniff
Freemium Free to download; a paid PRO license adds features such as the MCP server.	Free Freeware from NirSoft; free to redistribute as long as nothing is charged.
macOS	Windows
Wireshark decoding in a native Mac interface Opens saved PCAP and PCAPNG files by drag and drop	Shows traffic as readable client-server conversations Can capture without installing a driver via Raw Sockets
Apple Silicon and macOS 15 or later only MCP integration requires the paid PRO tier	Official system requirements list Windows versions up to Windows 8 Raw Sockets mode misses outgoing UDP and ICMP packets and is unreliable on some systems
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0-or-later	License: Freeware
Not stated if an account is needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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