🇨🇳 中文 | 🇬🇧 English
Lightweight yet powerful macOS menu-bar network monitor with dynamic refresh rate, login-item support and multiple display modes.
- Live throughput Up/down speed for the primary interface, auto-scaling units (B/s, KB/s, MB/s)
- Adaptive refresh 0.5 s when ≥ 1 MB/s, 1 s otherwise
- Icon toggle Optional arrow indicators
- Login-item One-click LaunchAgent setup, starts on login, no terminal needed
- Zero deps Pure Swift + system frameworks, < 100 KB binary
- Low CPU ≈ 0.2 % usage
# Clone & build
git clone https://github.com/Tespera/NetSpeed.git
cd NetSpeed
swift build -c release
# Package as .app
./tools/package_app.sh
# Move NetSpeed.app to /Applications and launch- Download the latest release
- Extract and move
NetSpeed.appto/Applications - First launch → System Settings → Privacy & Security → Allow
- Menu-bar icon → right-click → Launch at Login (if desired)
| Task | Action |
|---|---|
| Show / hide icons | Menu-bar icon → Show Icons |
| Upload only / Download only / Both | Menu-bar icon → Upload Only / Download Only / Both |
| Auto-start | Menu-bar icon → Launch at Login |
| Quit | Menu-bar icon → Quit |
- Source: SystemConfiguration framework, primary active interface (Wi-Fi / Ethernet)
- Smoothing: No smoothing ≥ 1 MB/s; 3-point moving average < 1 MB/s for stability
- Units: 1 KB = 1000 B, 1 MB = 1000 KB—same as Activity Monitor and Safari
- macOS 11 Big Sur or newer
- Apple Silicon & Intel
swift build # debug build
swift run # run directly
swift test # run tests (if any)Issues & pull requests welcome! Please follow Swift official style and keep dependencies at zero.
MIT © 2025 Tespera
If NetSpeed helps you, a ⭐ is the best thanks!