I know that Mathematica is available on Linux. I wonder how much more would be needed for Wolfram to make a FreeBSD release.
- "Linux® Binary Compatibility"
- "Describes the Linux® compatibility features of FreeBSD. Also provides detailed installation instructions for many popular Linux® applications such as Oracle® and Mathematica®."
https://docs.freebsd.org/en/books/handbook/book/#preface-ove...
I wasn't able to find that exact reference in the docs of the current release (using a mobile device at the moment). However, there is a very useful forum thread for anyone interested. It's not a straightforward install, but it's definitely possible to install/use Mathematica on FreeBSD.
https://forums.freebsd.org/threads/freebsd-13-0-runs-mathema...