Ngspice [SEP] license
compiled into a shared library (*.dll or *.so) readily to be integrated into a calling program. Its interface provides access to all simulation parameters, input and output data. tclspice, another shared library version, offers an interface to Tcl/Tk (software).
Ngspice is licensed under the New BSD license.
Ngspice has a command line input interface and offers plotting capability. An open source GUI with schematic entry, simulation and plotting is provided by Qucs-S.
Ngspice has been integrated as a
List of free electronics circuit simulators
Electronic circuit simulators distributed under a free software license are available from several sources and for several computing platforms.
Analog.
- Electric VLSI Design System, used to draw schematics and lay out integrated circuits
- Oregano
- SPICE and variants, such as Ngspice
Digital.
- CPU Sim
- KTechLab
- Logisim
- Logic Friday
Mixed-signal (analog and digital).
- GNU Circuit Analysis Package (Gnucap)
- Ngspice, including digital