Compare software

SoftPerfect Network ScannerWhoIsConnectedSniffer
Paid

Commercial software with licences sold through the SoftPerfect website.

 Free

Freeware from NirSoft; it may not be sold or bundled with commercial products.

Windows, macOS, Linux Windows
  • Queries devices over WMI, SNMP, HTTP, SSH and PowerShell
  • Supports both IPv4 and IPv6
  • Passive discovery that sends no packets to other devices
  • Shows operating system, description and IPv6 address that scanners may miss
  • Paid licence required
  • Closed source
  • Requires the Npcap or Network Monitor capture driver
  • Only detects devices that send packets the computer receives, and not on other subnets
Downloadable app Downloadable app
Closed source Closed source
License not stated License: Freeware
No account needed No account needed
Works offline Not stated if it works offline

Checked September 23, 2026

Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.