First I believe there is no such thing as the Mathematica language, it's Wolframscript which is useful in a bunch of different applications. And second, if you don't have access to a $1000 / yr wolfram subscription, this would be the next best thing.

They rebranded it to Wolfram Language a few years ago (which I actually appreciate, as it is so much more than just "math" by now!)

https://writings.stephenwolfram.com/2013/02/what-should-we-c...