Open Source Mathematical Software

 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 many more. Access their combined
 power through a common, Python-based language or directly via interfaces or
 wrappers.
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 Mission: Creating a viable free open source alternative to Magma, Maple,
 Mathematica and Matlab.
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 This package contains the main SageMath installation.