Wolfram Language and Mathematica version 15 25 days ago
But with something like mathematica and the price of it you will never be able to have a wide verification of the result if the software is not free.
This is not strictly true. The Wolfram Language/Engine is free. You can run the code in the terminal or after connecting the kernel to Jupyter Notebook. The frontend Mathematica is not free.
https://writings.stephenwolfram.com/2019/05/launching-today-...
https://github.com/WolframResearch/WolframLanguageForJupyter