What’s on your network?

mDNSRadar shows every device and service that announces itself with Bonjour – live, in a clear three-column browser for the Mac.

Free · Requires macOS 27 or later

Details

Inspect services down to the DNS record

Select a service and see everything it tells the network about itself.

Host name, port, IPv4 and IPv6 addresses, and the network interfaces it was found on.
TXT records as readable key/value pairs.
Raw DNS records (PTR, SRV, TXT, A, AAAA) with TTL, remaining time, decoded data and hex.

Details of a file sharing service with its addresses, TXT entries and raw DNS records

Overview

Hundreds of service types, clearly named

Browse by device or by service type and switch with one click. mDNSRadar knows friendly names and icons for hundreds of service types, from AirPlay, printers and file sharing to HomeKit, Matter, Thread and Google Cast.

The service type view listing Bonjour service types by their friendly names

Filter

Find anything as you type

Match names, host names, addresses or services, and press Command-F to jump to the filter. Narrow the lists to one or more network interfaces, such as Wi-Fi, Ethernet or this Mac.

The device list filtered by the text “mac”

Pause

Freeze a snapshot to take a closer look

Pause scanning and nothing expires, while you can still filter, select and copy. An animated radar in the toolbar shows when scanning is active.

mDNSRadar with scanning paused and the radar in the toolbar stopped

Made for a closer look

Live updatesDevices that go away are dimmed with a “seen … ago” label before they are removed.
Fitting iconsModel hints give Apple TV, HomePod, Mac, iPhone and iPad their own icons.
Copy with one clickNames, addresses, TXT values and records go straight to the clipboard.
Your timingChoose how long inactive items stay in the list.
Keyboard friendlyCommand-F filters, Option-Command-P pauses and resumes scanning.
In your languageEnglish, German, French, Spanish, Italian, Dutch, Portuguese, Polish, Swedish and Danish.

Private by design

No data collected

mDNSRadar only listens to Bonjour on your local network. It contains no analytics or tracking and sends nothing anywhere. Discovered devices are kept in memory only and forgotten when you quit.

Read the privacy policy

Questions

Why don’t I see a device I know is on my network?

Bonjour only works within one network segment. Devices behind a different router, in another VLAN or on a guest network are usually invisible unless your network forwards mDNS. Some devices also only advertise their services while they are awake or in pairing mode.

Why does mDNSRadar ask for access to my local network?

macOS asks every app before it may find devices on your local network. Without this permission mDNSRadar cannot see any Bonjour announcements, so please choose Allow.

Does mDNSRadar send my data anywhere?

No. It only listens to Bonjour on your local network and keeps what it finds in memory until you quit.

Get mDNSRadar

Free on the Mac App Store, for macOS 27 or later.