TCP Viewer as a Cocoa Packet Analyzer alternative
TCP Viewer and Cocoa Packet Analyzer both provide native Mac interfaces for packet analysis. TCP Viewer adds live capture, application and domain grouping, and Wireshark-powered protocol inspection.
TCP Viewer vs Cocoa Packet Analyzer
| TCP Viewer | Cocoa Packet Analyzer |
|---|---|
| Primary workflow Combines live capture with inspection of saved PCAP and PCAPNG files. | Primary workflow Opens existing packet traces in native Mac document windows. |
| Traffic organization Groups captured packets by application and domain as well as the main packet list. | Traffic organization Provides sortable packet lists, document-based filters, and protocol statistics. |
| Protocol details Uses Wireshark decoding with a protocol tree linked to highlighted raw bytes. | Protocol details Uses bundled Swift protocol analyzers with per-field hex highlighting. |
| Streams Follows TCP and UDP streams and links the reassembled data to source packets. | Streams Provides protocol-aware Follow TCP Stream and Follow UDP Flow views. |
| Capture files Opens and exports PCAP and PCAPNG files. | Capture files Reads libpcap traces and reads or writes PCAPNG documents. |
| Automation Includes a bundled CLI, with MCP support in TCP Viewer Pro. | Automation Its public listing focuses on a graphical, document-based Mac workflow. |
Choose TCP Viewer when
- You need live packet capture and saved-file analysis in the same app.
- You want to find traffic by application or domain.
- You need Wireshark display filters, protocol decoding, and linked raw bytes.
- You want Follow TCP Stream and Follow UDP Stream in a current Mac workflow.
Choose Cocoa Packet Analyzer when
- Your work is centred on opening saved traces in native document windows.
- You want a document-based workflow with Finder Quick Look and Spotlight integration.
If you have existing PCAPNG files, try the same trace in both apps and compare how quickly each interface helps you reach the relevant packet or stream.
Official source
See the other TCP Viewer alternatives.