No account or login
Install and open NBOK. You do not need to register, create an account or provide a phone number.
Free cross-platform LAN messenger
Messages and file transfers on your local network.
NBOK lets you send messages and files between phones and computers connected to the same local network. No registration, account, login or phone number required.
For Windows, macOS, Linux, Android and iOS.
Why NBOK
A simple messenger for devices nearby
Communicate directly across devices on your local network, without creating an online messaging account.
Automatic device discovery
NBOK can discover supported devices on the same local network, so you can start communicating without manually entering device addresses.
Messages and file transfer
Send text and files between supported phones and computers. On desktop, drag and drop makes file sharing straightforward.
One local network
Connect phones and computers
NBOK supports the major desktop and mobile platforms, making it easy to move messages and files between your devices.
Windows
macOS
Linux
Android
iPhone & iPadGet started
How to use NBOK
Getting started takes just a few simple steps.
1
Install NBOK
Download NBOK for your phone or computer and install the app.
2
Join the same network
Connect your phone and computer to the same Wi-Fi network or local area network.
3
Start sharing
Open NBOK on your devices. Discovered devices can then exchange messages and files.
Download NBOK
Choose your platform
Install NBOK on your phone or computer and connect your devices to the same local network.
Android
Get NBOK from Google Play.
iPhone & iPad
Get NBOK from the App Store.
Windows
Download the desktop installer.
macOS
Download the Mac installer.
Linux
Install NBOK through Snapcraft.
For device discovery, your network must allow local device communication. Some routers, guest Wi-Fi networks or firewall settings may block local discovery.
Help
Frequently asked questions
Does NBOK require an account?
No. NBOK does not require registration, an account, a login or a phone number to get started.
Do devices need to be on the same Wi-Fi?
Devices should be connected to the same local network. They do not necessarily need the same Wi-Fi access point if the network allows devices to communicate with one another.
Can NBOK send files between a phone and a computer?
Yes. NBOK supports sending files between supported devices on the same local network. Desktop versions also support dragging and dropping files.
Why can't my devices find each other?
Device discovery uses IGMP multicast. Check that both devices are on the same local network and that your router, guest-network isolation and firewall settings allow local multicast and device-to-device communication. You may need to allow NBOK through your firewall.
Does NBOK work over the internet?
NBOK is designed for communication on a local area network, not as an internet-based messaging service. Devices need a network path that allows them to communicate locally.
How do I uninstall NBOK on Windows?
Open Windows Settings, go to Apps or Apps & features, select NBOK, and choose Uninstall.