Are there any free/cheap alternatives to the SPICE family of simulators? I'm looking for software that's NOT based on spice, ngspice, etc.
There are two reasons for my question:
- I'm a software engineer by trade and curious if there are any modern circuit simulation engines out there.
- The UI's for all the SPICE-based simulators feel like they're from the 80's.
The QAs I've seen are all about SPICE related software (e.g. for macOS), and I've read various articles, Wikipedia, etc. Ideally I can get a recommendation from someone that really prefers their non-SPICE simulator.