Sniffnet

An open-source tool to comfortably monitor your internet traffic.

Download Sniffnet

Installer for Intel Macs (.dmg)

Other downloads (1)

Sniffnet_macOS_AppleSilicon.dmg
unknown · .dmg · 18.7 MB
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Getting a "can't verify the developer" warning?

If you see a warning on first launch, go to System Settings > Privacy & Security and click "Open Anyway". Open source software usually isn't signed with an Apple developer certificate, which is normal.

Clicking "Download" takes you to a source confirmation page first; the download starts after confirmation.

About Sniffnet

Comfortably monitor your Internet traffic 🕵️‍♂️

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Risk notice

On some systems, capturing network packets requires administrator/root privileges. The macOS version is not explicitly signed by a developer, so it may be blocked on first launch and must be manually allowed.

Who it's for

General users who want an intuitive understanding of their computer's network connections.
Security enthusiasts who need to quickly locate abnormal traffic or suspicious connections.
Technical professionals who perform network monitoring and troubleshooting in a cross-platform environment.
Users who prefer a graphical interface over command-line tools for packet capture and analysis.

Who it's not for

Users who need to parse packet payloads for deep analysis.
Users who prefer pure command-line operation and are not comfortable with a GUI.
Users who are unwilling to install additional system dependencies.

Install guide

Windows

x64 (64-bit): Download Sniffnet_Windows_x64.msi, double-click to run, and follow the wizard to complete installation.
arm64: Download Sniffnet_Windows_arm64.msi.
x86 (32-bit): Download Sniffnet_Windows_x86.msi.

After installation, you can launch it directly from the Start menu.

macOS

Intel chip: Download Sniffnet_macOS_Intel.dmg.
Apple Silicon (M1/M2, etc.): Download Sniffnet_macOS_AppleSilicon.dmg.

After opening the DMG file, drag the Sniffnet icon into the "Applications" folder. On first run, if you see a warning that the app "cannot be opened because it is from an unidentified developer," go to "System Settings → Privacy & Security" and click "Open Anyway" to allow it to run.

Linux

Choose the package according to your distribution and architecture:

After downloading, run:

AppImage (recommended, no installation required): Select the file for your architecture, such as Sniffnet_LinuxAppImage_amd64.AppImage (x64), Sniffnet_LinuxAppImage_arm64.AppImage (arm64), Sniffnet_LinuxAppImage_i386.AppImage (x86), Sniffnet_LinuxAppImage_armhf.AppImage (arm 32-bit).

bash

  chmod +x Sniffnet_LinuxAppImage_amd64.AppImage
  ./Sniffnet_LinuxAppImage_amd64.AppImage

Debian/Ubuntu (.deb): Select Sniffnet_LinuxDEB_amd64.deb (x64), etc., and run in terminal:

bash

  sudo apt install ./Sniffnet_LinuxDEB_amd64.deb

Or double-click the file to install with the software center.

Fedora/RHEL (.rpm): Select Sniffnet_LinuxRPM_x86_64.rpm (x64) or Sniffnet_LinuxRPM_aarch64.rpm (arm64), and run:

bash

  sudo dnf install ./Sniffnet_LinuxRPM_x86_64.rpm

Note: Sniffnet requires necessary system dependencies (such as libpcap). Please refer to the Required dependencies page on the official Wiki. If rendering issues occur, try setting the environment variable ICED_BACKEND=tiny-skia and run again.

FAQ

Is Sniffnet free software?

Yes, Sniffnet is completely free open-source software licensed under the Apache-2.0 license.

Which operating systems are supported?

Windows, macOS, and Linux are supported. The official project provides installation packages for each platform.

How do I update to a new version?

Sniffnet does not have automatic updates. You need to manually download the latest installer from the GitHub Releases page and overwrite the existing installation.

Are additional dependencies required?

On some systems, yes. For example, Linux may require libraries such as libpcap. Please refer to the Required dependencies page on the official Wiki.

Why does macOS show "cannot be opened because it is from an unidentified developer" on first launch?

Because the application is not distributed through the App Store, macOS blocks apps from unknown developers. You can go to "System Settings → Privacy & Security" and click "Open Anyway" to allow it to run.