Sage Math - Sage is a free open-source mathematics software system licensed under the GPL.

PARI/GP - PARI/GP is a widely used computer algebra system designed for fast computations in number theory - factorizations, algebraic number theory, elliptic curves, modular forms, L functions..

Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.

Autodesk Fusion 360 - Integrated CAD, CAM, and CAE featuring collaborative editing and cloud-based computation.

GNU Octave - GNU Octave is a programming language for scientific computing.

Mathcad - Mathcad is engineering calculation software that drives innovation and offers significant process...