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