Ngspice

Ngspice is a mixed-level/mixed-signal electronic circuit simulator. It is a successor of the latest stable release of Berkeley SPICE, version 3f.5, which was released in 1993. A small group of maintainers and the user community contribute to the ngspice project by providing new features, enhancements and bug fixes. Ngspice is based on three open-source free-software packages: Spice3f5, Xspice and Cider1b1:

Ngspice

Ngspice is a mixed-level/mixed-signal electronic circuit simulator. It is a successor of the latest stable release of Berkeley SPICE, version 3f.5, which was released in 1993. A small group of maintainers and the user community contribute to the ngspice project by providing new features, enhancements and bug fixes. Ngspice is based on three open-source free-software packages: Spice3f5, Xspice and Cider1b1: