Welcome to Mathsoft, Inc. (Mathcad)

• Modelzoo - Interactive Economic Models with Mathcad (Interactive economic modeling by using Mathcad, maintained by Adreas Thiemer)

Wolfram Research, Inc. (Mathematica)

The MathWorks: Developers of MATLAB and Simulink (MATLAB)

Waterloo Maple: Home (Maple)

Scilab Home Page (Matlab-like but free)

AlgebraPoint (The shortest way to ease up complicated inequalities, linear equations and algebra problems with powerful workbench type calculator.)

Aptech Systems, Inc - GAUSS Mathematical and Statistical System (GAUSS)

GAUSS ARCHIVE: INDEX (GAUSS source code archive @ American University)

GAMS Home Page (The General Algebraic Modeling System is a high-level modeling system for mathematical programming problems)

Software Series at IDEAS (List of software programs for economics and econometrics, provided by the University of Connecticut)