Pspice is described as «Software for Simulating Voltage and Currents of a text file net-list of a electronics components such as Resistors, Capacitors, inductors, transisters, Diodes, Voltage and Current Sources, etc» and is a circuit simulator in the education & reference category. There are more than 25 alternatives to Pspice for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and iPhone. The best alternative is Circuit JS, which is both free and Open Source. Other great apps like Pspice are LTspice, QUCS, Circuit Simulator (CircuitJS1) and iCircuit.Pspice alternatives are mainly Circuit Simulators but may also be Electronic Design Automation Tools or CAD Software. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Pspice.