Quite Universal Circuit Simulator

http://qucs.sourceforge.net/download.html

QUCS 101

http://qucs.sourceforge.net/docs/tutorial/getstarted.pdf

Roadmap

• http://qucs.sourceforge.net/road.html

Links

• QUCS-KiCad-FreeCAD Toolchain - also documents the learning journey
• Spice integration to KiCad by a Polish developer at FOSDEM - [1]
• Qucs is way more than (ng)spice, integrating the qucsator simulator engine would benefits KiCAD. This would allow to simulate PCB layout and open the door to parameterised layout. AFAIK, one of the main Qucs focus is RF simulation. A tighter KiCAD/Qucs/GnuCAP would be highly beneficial to the community. My 2 cents, Chris. - from [2]