Whosthere

lastmod 2026-01-26created 2026-01-261 edits

Modern TUI-based LAN discovery tool written in Go

About

• Whosthere is a local network discovery tool written in Go, providing an intuitive terminal user interface (TUI)
  • Discovers and explores devices on the LAN, helping you understand the network structure
• Supports Linux, macOS, Windows
• Identifies devices by populating the ARP cache through mDNS and SSDP scanners plus TCP/UDP connection attempts
  • Can collect a device list using the ARP cache even without administrator privileges
• Shows manufacturer information for discovered devices via OUI (Organizationally Unique Identifier) lookup
• Apache-2.0 License

Key features

• Modern TUI: an interface for intuitively browsing discovered devices
• Fast & Concurrent: runs multiple discovery methods simultaneously for fast results
• No Elevated Privileges Required: runs with user permissions only
• Device Enrichment: shows manufacturer information via OUI lookup
• Integrated Port Scanner: includes port scanning of discovered hosts (scanning only authorized devices is recommended)
• Daemon Mode with HTTP API: runs in the background and enables integration with external tools
• Theming & Configuration: customize themes and behavior through a YAML configuration file

See also

• TUI

Favorite site

• Github - ramonvermeulen/whosthere
• Whosthere - Modern TUI-based LAN discovery tool written in Go | GeekNews