FreeMat

FreeMat is a free environment for rapid engineering and scientific prototyping and data processing. It is similar to commercial systems such as MATLAB from Mathworks, and IDL from Research Systems, bu...
Language(s): Assembly language, C, C++, Fortran, Qt
Operating system(s): Linux, Mac OS, Windows
License: GNU General Public License

GNU Octave

GNU Octave is a Scientific Programming Language with powerful mathematics-oriented syntax with built-in plotting and visualization tools, Free software, runs on GNU/Linux, macOS, BSD, and Windows, and...
Language(s): C, C++, Fortran
Operating system(s): GNU/Linux, Mac OS, BSD, Windows
License: GNU GPLv3

Maxima

Maxima is a system for the manipulation of symbolic and numerical expressions, including differentiation, integration, Taylor series, Laplace transforms, ordinary differential equations, systems of li...
Language(s): N/A
Operating system(s): Windows, Linux, Mac OS X
License: GNU General Public License

SageMath

SageMath is a free open-source mathematics software system licensed under the GPL. It builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and ma...
Language(s): Python
Operating system(s): Linux, Mac OS, Windows, Solaris, Android, iOS
License: GPLv3

SciPy

SciPy (pronounced “Sigh Pie”) is a Python-based ecosystem of open-source software for mathematics, science, and engineering. In particular, these are some of the core packages: NumPy, SciPy library, M...
Language(s): Python, Fortran, C, C++
Operating system(s): Cross-platform
License: BSD-new license