Sniffnet 1.5.1 for Mac

Mac Utilities

Updated Aug 22, 2026

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Sniffnet is a network traffic monitor that makes your internet activity easy to understand. Pick a network adapter and it draws live charts of traffic volume, lists the remote hosts your Mac talks to, names the services and protocols in use and shows where connections go in the world. It is free, open source and written in Rust for speed. Updated Aug 22, 2026.

Key Features

• Live charts of incoming and outgoing traffic
• Lists hosts, domains and network providers per connection
• Identifies services and protocols behind each flow
• Shows which local programs generate traffic
• Filters and search to inspect single connections in depth
• Saves reports and can import capture files for review

How to Download

1. Download from the official site and open the download area.
2. Choose the macOS build for your Mac.
3. Install the app and grant the permissions it requests.
4. Select your adapter and watch traffic appear in real time.

System Requirements

Sniffnet runs on Mac, Windows and Linux. On a Mac it needs a recent macOS release and permission to capture packets on the adapter you choose. Apple silicon and Intel Macs are both supported.

FAQs

Is Sniffnet free?

Yes. It is completely free and open source, and the full source code is published on GitHub.

Is Sniffnet a firewall?

No. It observes and explains traffic rather than blocking it, which makes it a good companion to a firewall.