LAN Device Scanner discovers the devices connected to your local network and shows their IP address, hostname, MAC address, vendor and latency. A lightweight Linux alternative to Wireless Network Watcher for finding unknown devices on your Wi-Fi or LAN.

It performs a real scan of the local /24 subnet of each active interface (TCP connect and UDP probes that make the kernel resolve neighbours), then reads the kernel ARP table (/proc/net/arp), the routing table (/proc/net/route) and reverse DNS. Vendor names come from the OUI database when it is installed on the system, and randomized (private) MAC addresses are recognised.

Key Features:

• Devices tab: IP, hostname, MAC, vendor, interface, role (this computer / gateway / device) and latency.
• New-device alert: devices not seen in previous scans are highlighted as NEW (history kept in the app's data folder).
• Port Check tab: real TCP connect test of 22 common service ports on the selected device.
• Wake-on-LAN magic packet sender, copy IP/MAC and CSV export.
• Network tab with local interfaces, netmasks, default gateway and the live ARP table.
• Bilingual donate banner (Vietnamese / English).

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by NirSoft.