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CoulombQucs-S
Free

Free and open source under the GPL-3.0 licence.

 Free

Free and open source, supported by donations.

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

Checked October 1, 2026

Checked September 23, 2026

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