TCP Viewer as a tcpdump alternative for Mac
TCP Viewer and tcpdump both capture network packets. TCP Viewer provides a visual Mac workspace, while tcpdump is a compact command-line tool that fits terminal, remote, and scripted workflows.
TCP Viewer vs tcpdump
| TCP Viewer | tcpdump |
|---|---|
| Interface A native macOS application with packet lists, protocol trees, and linked raw bytes. | Interface A command-line program that prints packet summaries or writes capture files. |
| Traffic discovery Groups packets by application and domain for visual exploration. | Traffic discovery Relies on capture expressions, command output, and shell tools. |
| Filtering Offers quick visual filters and Wireshark display-filter expressions. | Filtering Uses Berkeley Packet Filter capture expressions to limit traffic at capture time. |
| Stream inspection Reassembles and follows TCP and UDP streams in the app. | Stream inspection Displays packets in the terminal and leaves richer stream analysis to other tools. |
| Capture files Opens and exports PCAP and PCAPNG files. | Capture files Writes PCAP files that can be opened in graphical analyzers. |
| Automation Its bundled CLI controls TCP Viewer's capture and analysis workflow. | Automation Runs directly in shell scripts, remote sessions, and headless environments. |
Choose TCP Viewer when
- You want to explore traffic visually on a Mac.
- You need application and domain grouping before packet-level inspection.
- You want decoded protocol fields, byte highlighting, or Follow TCP and UDP Stream.
- You prefer to capture, filter, and export from one desktop app.
Choose tcpdump when
- You are capturing on a remote or headless machine.
- You need a small command that fits an existing shell script.
- You already know the exact capture expression and output you need.
A common workflow is to capture remotely with tcpdump, copy the PCAP file to your Mac, and inspect it visually in TCP Viewer.
Official source
See the other TCP Viewer alternatives.