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Termshark vs TCP Viewer: catalog facts
Termshark	TCP Viewer
Free Free and open source under the MIT licence.	Freemium Free to download; a paid PRO license adds features such as the MCP server.
macOS, Linux, Command line	macOS
Wireshark-style analysis over an SSH session with no X forwarding Uses tshark, so dissection matches Wireshark exactly	Wireshark decoding in a native Mac interface Opens saved PCAP and PCAPNG files by drag and drop
Requires tshark installed Fewer features than the Wireshark graphical application	Apple Silicon and macOS 15 or later only MCP integration requires the paid PRO tier
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-2.0-or-later
Not stated if an account is needed	Not stated if an account is 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 2, 2026

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