ngspice: ng-spice (A free mixed-level/mixed-signal circuit simulator)
ngspice: 
ngspice: Ngspice is a mixed-level/mixed-signal circuit simulator.
ngspice: Its code is based on three open source software packages: Spice3f5,
ngspice: Cider1b1 and Xspice. Ngspice is part of gEDA project, a full
ngspice: GPL'd suite of Electronic Design Automation tools.
ngspice: 
ngspice: 
ngspice: 
ngspice: 
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