Get Wolfram Language Free

3 ways to get Mathematica for free.

Mathematica is bundled with Raspberry Pi

• https://www.wolfram.com/raspberry-pi/
• https://www.raspberrypi.org/documentation/usage/mathematica/
• https://projects.raspberrypi.org/en/projects/getting-started-with-mathematica

Wolfram Engine

• https://www.wolfram.com/developer/
• [Launching Today: Free Wolfram Engine for Developers 2019-05-21 By Stephen Wolfram. At https://writings.stephenwolfram.com/2019/05/launching-today-free-wolfram-engine-for-developers/ ]

Graphics is not available by default. If you want graphics, install and configure https://github.com/WolframResearch/WolframLanguageForJupyter

WolframScript

https://www.wolfram.com/wolframscript/

WolframScript enables Wolfram Language code to be run from any terminal, whether or not a Wolfram kernel is available on the system.

Buy Mathematica

Or, just buy it. Cheap for student or hobbist. I recommend it as life time investment. https://www.wolfram.com/mathematica/pricing/