effmass vs ngspice
| effmass | ngspice | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Linux, macOS, Windows | Linux, macOS, self-hosted, Windows |
| Free plan | Yes | Yes |
Both are listed in Best Physics Simulation Software. On Freedom251, ngspice scores higher on our published basis.