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Cocoa Packet Analyzer vs TCP Viewer: catalog facts
Cocoa Packet Analyzer	TCP Viewer
Free Downloadable directly from the developer site with no price shown.	Freemium Free to download; a paid PRO license adds features such as the MCP server.
macOS	macOS
Native macOS interface with menu bar capture QUIC, HTTP/3 and TLS 1.3 decryption	Wireshark decoding in a native Mac interface Opens saved PCAP and PCAPNG files by drag and drop
Current version requires macOS 26 or later macOS only	Apple Silicon and macOS 15 or later only MCP integration requires the paid PRO tier
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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