Calculus

Graphical demonstrations developed by Douglas N. Arnold for the first year calculus student.

This is a clearly written tutorial with plenty of graphic aids. Meant as an introduction for nonspecialists. Covers many of the basics, including differentiation.

An online book by H. Jerome Keisler. Covers differentiation, continuous functions, integration, limits, applications, infinite series, vector calculus and differential equations.

Here one can see a graph of the brachistochrone for the given endpoint. Java applet.

A calculus tutorial software that can solve differentiation problems and generate step-by-step solutions. Tests differentiation skills by generating dynamic quizzes.

A computer program for the numerical solution of systems of partial differential equations. Provided by Giacomo Lorenzoni.

A Python library for symbolic mathematics.