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TCP Viewer vs Wireshark: catalog facts
TCP Viewer	Wireshark
Freemium Free to download; a paid PRO license adds features such as the MCP server.	Free Free and open source. The foundation is funded by sponsors, training and certification.
macOS	Windows, macOS, Linux
Wireshark decoding in a native Mac interface Opens saved PCAP and PCAPNG files by drag and drop	Dissectors for hundreds of protocols, so the packet contents are readable rather than hex Display filters that cut a huge capture down to one conversation
Apple Silicon and macOS 15 or later only MCP integration requires the paid PRO tier	Capturing on most systems needs elevated privileges or a driver such as Npcap The interface assumes you already know roughly what you are looking for
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-2.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 20, 2026

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