FreeMat is a free environment for rapid engineering and scientific prototyping and data processing.
License: Open Source
Freemat is a free and open-source numerical computing environment that is ideal for educational purposes and simpler numerical tasks, while Mathematica offers advanced symbolic computation, a rich set of built-in functions, and extensive support for machine learning, making it more suitable for complex mathematical modeling and professional use. The choice between them often comes down to budget and specific use case requirements.