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Qucs-SCoulomb
Free

Free and open source, supported by donations.

 Free

Free and open source under the GPL-3.0 licence.

Windows, macOS, Linux Linux
  • Graphical schematic entry for SPICE simulation
  • Windows installer bundles Ngspice
  • Plots voltage and current of components over time
  • Clean GTK4 and libadwaita interface
  • Simulation only; no PCB layout
  • macOS install goes through Homebrew
  • Simpler than SPICE-based tools
  • Small project with a single main developer
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: GPL-3.0-or-later
No account needed No account needed
Works offline Works offline

Checked September 23, 2026

Checked October 1, 2026

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