MathLib is a diverse library of mathematical functions.
Supported by Cartesian &c.
L-system support is offered by -rewriteString.
LaTeX supports integration with the LaTeX typesetting system.
Supported for Markov and Fuzzy Sets is provided here: Markov & Fuzzy.
Matrix operations are provided by Matrix.
Various Pattern operations are supported by Patterns.
Support for polynomials is provided here: Polynomials & Special.
2D & 3D views are supported by ScatterViews.
Support for numerical solving and root finding is found here: Solvers.
extStatistics offers a guide to various operations.
Julian Rohrhuber, et al.