NetFluss

A minimal macOS menubar app showing real-time upload and download rates across all active network adapters. Now with Fritz!Box, UniFi, and OpenWRT router bandwidth monitoring.

Latest release: NetFluss 1.12.1

Features

Menubar

• Live upload ↑ and download ↓ rates displayed in the menu bar
• Four menu bar icon styles: Standard, Unified pill, Dashboard, and Icon
• Separate color choices for upload arrow, download arrow, upload number, and download number
• Monospaced digits for stable layout
• Configurable font size (8–16 pt) and font style (Monospaced / System / Rounded)
• Pinned unit — lock the display to KB/s, MB/s, or GB/s (bits or bytes) instead of auto-scaling
• Decimal places — choose 0, 1, 2, or 3 fixed decimals, or auto
• Icon mode — switch to a single symbol in the menu bar and choose between multiple icon options
• Launch at login — toggle in Preferences → Launch

Popover

• Header — total Download and Upload rates shown prominently at the top
• Adapter cards — each active network interface as a card with:
  • SF Symbol icon for Wi-Fi, Ethernet, or other adapters
  • Link speed badge (Wi-Fi TX rate or Ethernet speed)
  • Per-card DL/UL rates with coloured arrows
  • Wi-Fi frequency band (2.4 GHz / 5 GHz / 6 GHz) or "Ethernet"
  • ↺ reconnect button — cycles the adapter off and back on (Wi-Fi: no password needed; Ethernet: macOS admin dialog)
  • ℹ️ Wi-Fi detail popover — click the (i) button on any Wi-Fi card to see: Standard (e.g. Wi-Fi 6 / 802.11ax), Security (WPA3 Personal, etc.), Channel & Width, RSSI, Noise, SNR, ESSID, BSSID (with copy), and Tx Rate
• IP addresses — two display modes:
  • List view — External, Internal, and Router IP, each with a one-click copy button
  • Connection flow view — visual network path from your Mac through the router (and VPN, if active) to the internet, with country flag for VPN exit nodes
• DNS Switcher — switch between DNS providers directly from the popover (enable in Preferences):
  • Built-in presets: System Default, Cloudflare, Google, Quad9, OpenDNS
  • Add your own custom DNS presets
  • Shows the currently active DNS with a green checkmark
  • One-click switching with Touch ID authentication (falls back to admin password when Touch ID is unavailable)
• Fritz!Box Bandwidth (Experimental) — shows total WAN download/upload rates from your Fritz!Box router via TR-064 API, with progress bars relative to your line speed (enable in Preferences)
• UniFi Bandwidth (Experimental) — shows WAN download/upload rates from UniFi gateways (UDM, USG, UXG) via the UniFi OS REST API; credentials stored in macOS Keychain (enable in Preferences)
• OpenWRT Bandwidth (Experimental) — shows WAN download/upload rates from OpenWRT routers via the ubus JSON-RPC API; credentials stored in macOS Keychain (enable in Preferences)
• Scrollable popover — the popover is now scrollable and resizable for smaller screens, preventing overflow when many adapters or sections are active
• Edge-aware popover positioning — keeps the popover fully visible when the menu bar icon sits near the left or right screen border
• Top Apps — optional section listing the top 5 processes by current network traffic, with a relative usage bar per app (enable in Preferences)
  • App filtering — hide noisy background processes (e.g. mDNSResponder) from the list via Preferences or hover to hide directly
• Footer — quick access to Preferences, About, and Quit

Preferences

• Refresh interval (0.5 – 5 seconds)
• Optional automatic GitHub update checks once per day, with the manual About check still available
• Show/hide inactive adapters
• Show/hide other adapters (VPN, virtual interfaces)
• Adapter grace period — keep adapters visible for 3 s, 5 s, or 10 s after they go idle, so brief inactivity doesn't make cards flicker
• Per-adapter visibility toggles, custom names (pencil button), and drag-to-reorder (≡ handle) — order and names are reflected in the popover
• Adapter list scrolls when more than 6 interfaces are shown
• Options to calculate total bandwidth from only visible adapters and to exclude VPN/tunnel adapters from totals while still showing them in the adapter list
• Display rates in bits or bytes
• Upload / Download arrow colours plus separate upload / download number colours
• Menu bar icon style — Standard, Unified pill, Dashboard, or Icon
• Menu bar font size (8–16 pt stepper) and font style (Monospaced / System / Rounded)
• Pinned unit — lock menu bar rates to KB/s, MB/s, or GB/s instead of auto-scaling
• Decimal places — choose 0, 1, 2, or 3 fixed decimals for menu bar rates
• Connection status mode — choose between the classic IP list or the new connection flow view
• Top Apps toggle
• Top Apps grace period — keep apps visible for 3 s, 5 s, or 10 s after their traffic stops, preventing the list from constantly reshuffling
• App filtering — hide specific apps from the Top Apps list; "Apps to Hide" shows all recently active processes for easy selection
• DNS Switcher — toggle to show the DNS picker in the popover; includes built-in presets (System Default, Cloudflare, Google, Quad9, OpenDNS) plus custom presets with edit support; visibility toggles, drag-to-reorder, and delete for each preset
• Fritz!Box Bandwidth (Experimental) — toggle to show total WAN bandwidth from your Fritz!Box router; configurable router address (auto-detected from gateway, fallback: fritz.box); queries TR-064 API on port 49000 (no authentication required)
• UniFi Bandwidth (Experimental) — toggle to show WAN bandwidth from UniFi gateways; configurable host; credentials stored securely in macOS Keychain; supports UniFi OS (UDM) and legacy controller
• OpenWRT Bandwidth (Experimental) — toggle to show WAN bandwidth from OpenWRT routers; configurable host; credentials stored securely in macOS Keychain; uses ubus JSON-RPC API with automatic session management
• Touch ID — use Touch ID for DNS changes and Ethernet reconnects (enabled by default, configurable in DNS Switcher section)
• Resizable preferences window — drag edges to resize for smaller screens (note: resize cursor may not be visible due to a macOS/SwiftUI limitation)
• Launch at login toggle

About

• Version number with link to release notes on GitHub
• Made by Rana GmbH — www.ranagmbh.de
• If you want to support this project directly, please use https://buymeacoffee.com/robertrudolph
• Check for Updates — queries GitHub Releases, shows release notes and a Download button when a newer version is found
• Optional daily background update checks with a direct link to the newest release page

Requirements

• macOS 13 Ventura or later
• Xcode 15+ or Swift 5.9+ toolchain (to build from source)

Install

Download NetFluss-1.12.1.zip from the latest release, unzip, and move NetFluss.app to /Applications.

NetFluss is notarized and signed with a Developer ID — Gatekeeper will clear it automatically on first launch.

You can also use Homebrew to install NetFluss:

brew install --cask rana-gmbh/netfluss/netfluss  

Build from source

swift build -c release

Or open Package.swift in Xcode and run the executable scheme.

Notes

• Wi-Fi SSID and band use CoreWLAN. macOS may prompt for Location Services permission to expose SSID details.
• Ethernet link speed is read from ifi_baudrate and may show — when unavailable.
• External IP is fetched from ipwho.is (with api.ipify.org as fallback) and cached for 60 seconds.
• Top Apps reads per-connection byte counts from netstat -n -b -v and correlates them with process names via proc_pidpath. Only processes with active TCP/UDP connections appear in the list.

Buy me a coffee

If you enjoy using NetFluss please consider supporting the project via this link: https://buymeacoffee.com/robertrudolph

License

NetFluss is released under the GNU General Public License v3.0. Copyright © 2026 Rana GmbH