GAP

Open Source Algebraic Computation

GAP is - short for Groups, Algorithms, Programming - an algebraic computation system, i.e. a system for computational discrete algebra. Its main focus is on computational group theory. GAP includes its own programming language, as well as large data libraries of algebraic objects.

Maxima

Open Source Algebra Tool

Maxima is a popular computer algebra system that puts an emphasis on symbolic computation. It can be used for advanced algebraic calculations and will plot functions and data in both two and three dimensions.

SAGE

Open Source Mathematics Software

SAGE can be used for studying a wide variety of mathematics, including algebra, calculus, number theory, graph theory and more. It is used as an open source alternative to many commercial mathematics programs, including Magma, Maple, Mathematica and MATLAB.

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World Wind

World Wind allows any user to zoom from satellite altitude into any place on Earth, leveraging high resolution LandSat imagery and SRTM elevation data to experience Earth in visually rich 3D, just as if they were really there. Particular focus was put into the ease of usability so people of all ages can enjoy World Wind.