# Freeware

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MathLib is a clone of Matlab, but written entirely in java. A library of mathematical functions designed to be used in evaluating complex expressions and display the results graphically. It will be used either interactively through a terminal like window or to interpret script files.

Math-o-mir is a software tool designed to write and edit mathematical equations as easily as possible. The goal was to achieve the same level of simplicity as with pencil and a sheet of paper. It is designed to act as your personal math notepad where you can write down your quick and informal calculations.

MathCast is an equation editor, an application that allows you to input mathematical equations. These equations can be used in written documents and webpages. The equations can be rendered graphically to the screen, to picture files, or to MathML - today's leading standard language for describing mathematics. MathCast is a free and open source application.

Math Mechanixs - Math Software with 2D and 3D Graphing, Calculus, Curve Fitting, Matrices and More... Math Mechanixs® is an easy to use general purpose math software program compatible with Microsoft Windows®. It is ideal for students, teachers, engineers, and scientists or anyone requiring an easy to use PC based mathematical software program.

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, lists, vectors, matrices, and tensors. Maxima yields high precision numeric results by using exact fractions, arbitrary precision integers, and variable precision floating point numbers. Maxima can plot functions and data in two and three dimensions.

Microsoft Mathematics 4.0 provides a graphing calculator that plots in 2D and 3D, step-by-step equation solving, and useful tools for students from basic math through calculus. Microsoft Math received a 2008 Award of Excellence from Tech & Learning Magazine. Microsoft Mathematics 4.0 is free.

NonEuclid allows the curious explorer to gain experience in Hyperbolic Geometry and to empirically investigate questions such as: "In Hyperbolic Geometry, are the base angles of an isosceles triangle congruent?"

Octave has extensive tools for solving common numerical linear algebra problems, finding the roots of nonlinear equations, integrating ordinary functions, manipulating polynomials, and integrating ordinary differential and differential-algebraic equations.

Polygon-Overlap-Calculator is a program that calculates the area of two (convex) polygons as well as their overlap. The Polygon-Overlap-Calculator may, besides calculation of areas, be used to match geographic images such as maps and air photographs with coordinates on earth.

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. Mission: Creating a viable free open source alternative to Magma, Maple, Mathematica and Matlab.

Surfer is a program to visualize real algebraic geometry in real-time. The interactive SURFER program allows everybody to create algebraic surfaces in a simple and intuitive way. SURFER allows playful contact with geometry, i.e. it encourages the users to create formulas themselves or to change already existing ones in a creative manner. With SURFER, you can create amazingly beautiful images, which often obey quite simple formulas.

Winplot is a general-purpose plotting utility, which can draw (and animate) curves and surfaces presented in a variety of formats.

Winstats provides access to scatter plots, curve fitting, histograms, statistical data, and standard theoretical probability distributions. It performs many statistical tests and calculates confidence intervals. It simulates dealing cards, rolling dice, sampling candy, taking random walks, and tossing darts, needles and coins.

XL-Plot. The primary purpose of XL-Plot is to create a figure rapidly. It contains basic statistical functions, such as Student's t-test and linear correlation of two sets of data (two columns in a spreadsheet). XL-Plot has a number of build-in functions that can be fitted to the data in columns on a spreadsheet or to a curve in a graph. Additional options are Fourier transformation, (de-)convolution, eigen decomposition and matrix inversion.

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