ngspice
softwareAbout
Open-source SPICE circuit simulator supporting analog, digital, and mixed-signal circuits with broad compatibility across SPICE netlist formats.
Overview
ngspice is a community-maintained fork of the classic Berkeley SPICE3 simulator, widely used in academia and open-source EDA toolchains for analog and mixed-signal circuit verification. It is the go-to free simulator for engineers working with KiCad, Xschem, or other open-source schematic tools. Its broad SPICE compatibility and no-cost licensing are its strongest points, while the lack of an integrated GUI and the need to manually write or export netlists remain the primary friction points.
Pros
- +Completely free with wide platform and format support
- +Active open-source community with regular releases
Cons
- -No built-in schematic editor; requires external netlist input
- -CLI-centric workflow is unfriendly for beginners
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Details
Pricing
Model
open source
Platforms
Community
Creator reviews
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