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Qucs-SSimulIDE
Free

Free and open source, supported by donations.

 Free

Free and open source under the AGPLv3 licence.

Windows, macOS, Linux Linux
  • Graphical schematic entry for SPICE simulation
  • Windows installer bundles Ngspice
  • Simulates PIC, AVR and Arduino microcontrollers alongside analog and digital parts
  • Built-in code editor and debugger with breakpoints
  • Simulation only; no PCB layout
  • macOS install goes through Homebrew
  • Aimed at learning and hobby work rather than professional circuit design
  • Debugging is described as basic
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: AGPL-3.0
No account needed Not stated if an account is 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.