Ngspice

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

Free Open Source Mac OS X Windows Linux

Pspice

Software for Simulating Voltage and Currents of a text file net-list of a electronics components such as Resistors, Capacitors, inductors, transisters, Diodes, Voltage...

Freemium Windows

PartSim

PartSim is a free and full-featured SPICE circuit simulator that runs directly in your browser. PartSim schematic editor runs in your browser using javascript and...

Free Web

MacSpice

Simulates and analyses electronic circuits that can range in complexity from a single resistor to an integrated circuit comprising tens-of-thousands of devices.

Free Mac OS X

McCAD 3SPICE

McCAD 3-SPICE is based on the latest version (3F5) of Berkeley's SPICE 3 and permits interactive mixed mode circuit simulation. It was developed specifically to take...

Commercial Mac OS X Windows

Gnucap

Gnucap is the GNU Circuit Analysis Package, a modern post-spice circuit simulator with several advantages over Spice derivatives.

Free Open Source Linux