Top Alternatives to Mathematica

GNU Octave is a high-level programming language primarily intended for numerical computations. It provides a convenient command-line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments.

R is a powerful open-source language and environment for statistical computing, graphics, and data analysis. Widely used by statisticians and data miners for developing statistical software and data analysis.

SageMath is a free open-source mathematics software system that provides a comprehensive environment for symbolic and numerical computation, algebra, calculus, and more. It integrates various existing mathematics software packages into a common Python-based interface.

Scilab is an open-source, cross-platform software for numerical computation, offering a high-level, numerically oriented programming language and large collection of functionalities. It is widely used in scientific and engineering applications.

Maxima is a comprehensive computer algebra system developed in Lisp, specializing in symbolic manipulation of mathematical expressions. It's a powerful tool for algebra, calculus, equation solving, and more, widely used in academic and research settings.

wxMaxima is a powerful graphical interface for the Maxima computer algebra system. It provides a user-friendly environment for symbolic and numerical computations, equation solving, calculus, plotting, and more, making complex mathematical tasks more accessible.

Microsoft Mathematics is a comprehensive, albeit discontinued, educational program designed to assist students and mathematics enthusiasts in solving a wide array of math and science problems. It features a versatile calculator, powerful graphing capabilities, and tools for symbolic computation, making complex equations and concepts more accessible.

Python(x,y) is a comprehensive, free and open-source development environment for scientific and engineering tasks using Python. It bundles numerous libraries and tools for numerical computation, data analysis, visualization, and more, making it a powerful alternative to commercial software.

Spyder is a comprehensive Scientific Python Development Environment (IDE) designed specifically for data scientists, engineers, and researchers using Python for scientific computing. It offers a rich set of tools for interactive data exploration, analysis, and visualization.

fxSolver is a powerful online tool designed for solving complex mathematical, scientific, and engineering equations with ease. It features a vast library of formulas and a user-friendly interface, allowing users to input, solve, and visualize equations and data.

SymPy is a comprehensive Python library for symbolic mathematics. It empowers users to perform advanced mathematical computations, ranging from basic algebra and calculus to more complex concepts like differential equations and geometric algebra, all within the familiar Python environment.

GMDH Shell is a powerful yet accessible software designed for predictive analytics and data mining. It empowers users to perform advanced data analysis, forecasting, and modeling without requiring extensive programming knowledge, making it ideal for business professionals and data scientists alike.

GraphCalc is a classic open-source graphing calculator software designed for Windows and Linux. It provides robust mathematical computation and visualization capabilities for students and professionals.

Soulver is a unique calculation notepad that bridges the gap between a traditional calculator and a spreadsheet. It allows users to perform calculations using natural language, making it intuitive and flexible for a wide range of mathematical and financial tasks.

Swift Calcs is a powerful cloud-based platform designed for engineers, scientists, and educators to create, collaborate on, and share interactive computational documents. It combines the flexibility of a word processor with the power of a mathematical engine, allowing users to perform calculations, visualize data, and document their work seamlessly.

FreeMat is a free and open-source environment designed for engineering and scientific prototyping, data analysis, and numeric computation. It provides a MATLAB-like environment for users working with mathematical and scientific data, focusing on ease of use and powerful analytical capabilities.