Compare software

ipcalcSubNetCalc
Free

Free and open source under the GPL.

 Free

Free under the GPL license.

Linux, Command line Command line
  • Handles IPv4 and IPv6 with machine-readable output for scripting
  • Removes an entire class of subnetting arithmetic mistakes
  • Calculates IPv4 and IPv6 network details
  • Displays addresses in binary
  • Several unrelated programs share the name ipcalc, which causes confusion
  • Command line only
  • Command-line interface
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: GPL-3.0-or-later
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked October 8, 2026

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