1)   Matrix Calculator 1.1 Matrix calculator operations include: transpose, invert, scale, compute determinant and trace, adjoint, multiply, add, and subtract. Matrices can be saved to a text file for future sessions. A delimiter can be specified to separate elements. 2)   Inverse Matrices 1.03 Mathematical program for university students and professors. 3)   Linear Algebra 2 Performs computations associated with matrices: Solves systems of linear equations, finds sum, difference, product, determinant, trace, inverse, adjoint, transpose, eigenvalues, eigenvectors, LU factors, QR factors, tests for definiteness, etc. 4)   Kalkulator 2.41 Advanced Sci/Eng calculator. Expression evaluation, 18 digits precision, variables, >100 functions, graphs, unit conversion, interpolation, polynomial regression, linear algebra, systems of linear, nonlinear and differential equations, optimization. 5)   Linear Systems 1.02 Mathematical program for university students.