https://www.ni.com/nl-nl/shop/product/multisim.html
^^^^^
The above worthless trash known as “multisim”, used for simulating circuits costs 905 EUR and
- Doesn’t have a linux version
- Is missing 90% of new commercially available parts
- Doesn’t have a method of easily adding those parts (except manually, 1 by 1) (as far as I know)
- Has garbage UI (you can only undo 4 times) (adding or removing a single component can easily use up more than 4 moves)
- Inconsistent simulations (making the sims work feels like trying to appease a capricious God to not curse you with famine)
The free open source software (qucs-studio) seems to have none of these problems, though I have barely used it.
The best is when they intentionally break the file format in minor ways every version, so that you can always import older files but the second you open them in the newer version say goodbye to any backwards compatibility.