MATLAB

MATLAB is a numerical computing environment and programming language.

Commercial Mac OS X Windows Linux

R (programming language)

R is a free software environment for statistical computing and graphics.

Free Open Source Mac OS X Windows Linux BSD

GNU Octave

octave is a computer program for performing numerical computations which is mostly compatible with matlab. it is part of the gnu project.

Free Open Source Mac OS X Windows Linux BSD

Mathematica

Mathematica is a computational software program used widely in scientific, engineering, and mathematical fields and other areas of technical computing.

Commercial Mac OS X Windows Linux Web

Sage

Sage is a free open-source mathematics software system licensed under the GPL. It combines the power of many existing open-source packages into a common Python-based interface.

Free Open Source Mac OS X Windows Linux Web

Scilab

Scilab is a scientific software package for numerical computations providing a powerful open computing environment for engineering and scientific applications.

Free Open Source Mac OS X Windows Linux

scipy numpy

SciPy (pronounced "Sigh Pie") is open-source software for mathematics, science, and engineering. It is also the name of a very popular conference on scientific programming with Python.

Free Open Source Mac OS X Windows Linux

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 linear equations, polynomials, and sets...

Free Open Source Mac OS X Windows Linux

wxMaxima

wxMaxima is a document based interface for the computer algebra system Maxima. wxMaxima uses wxWidgets and runs natively on Windows, X11 and Mac OS X.

Free Open Source Mac OS X Windows Linux

Spyder

Spyder (previously known as Pydee) is a free open-source Python development environment providing MATLAB-like features in a simple and light-weighted software, available for Windows XP/Vista/7, GNU/Linux and Mac OS X.

Free Open Source Mac OS X Windows Linux

Maple

Maple is a general-purpose commercial computer algebra system. Users can enter mathematics in traditional mathematical notation. Custom user interfaces can also be created.

Commercial Mac OS X Windows Linux

python(x,y)

python(x,y) is a free scientific and engineering development software for numerical computations, data analysis and data visualization based on python programming language, qt graphical user interfaces and http://alternativein .

Free Open Source Windows

Microsoft Mathematics

Microsoft Mathematics is a desktop graphing calculator that can help you visualize and see mathematical concepts as you’ve never seen them before. Microsoft Mathematics includes ink handwriting support to recognize hand-written problems.

Free Windows

SymPy

SymPy is a Python library for symbolic computation. The stated goals of the library are to become a full-featured computer algebra system and to keep a simple code base to promote extensibility and comprehensibility.

Free Open Source Mac OS X Windows Linux

Mathcad

Mathcad is engineering calculation software that drives innovation and offers significant process productivity advantages for product development and engineering design projects.

Commercial Windows

GMDH Shell

Powerful forecasting software for small businesses, traders and scientists. GMDH Shell is the easiest way to accurately forecast time series, create classifiers and regression models.

Commercial Windows

Swift Calcs

The Collaborative Computational Notebook Built for Modern Engineering. Enter math as it appears on paper, get instantaneous results, and share your calculations with colleagues and clients.

Free Web

Freemat

FreeMat is an environment for rapid engineering and scientific processing. It is similar to commercial systems such as MATLAB from Mathworks and IDL from Research Systems, but is Open Source.

Free Open Source Mac OS X Windows Linux

Perl Data Language

PDL ("Perl Data Language") gives standard Perl the ability to compactly store and speedily manipulate the large N-dimensional data arrays which are the bread and butter of scientific computing.

Free Open Source Mac OS X Windows Linux

PCalc

PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator.

Commercial