Matrx - Screen Shots
The "Simple-Panel" offers simple one step calculations for matrices:

The matrices can be initialized by pressing "New" and defining dimensions, or by pressing "New[]" and entering the data directly into a text box:

The "Binary-Panel" is used to calculate addition and multiplication of two matrices:

In the "Equation Solver-Panel" the coefficients of a linear equation system and the absolute elements are specified. Then the solution is calculated (if there is any) and the matrix after the Gaussian elimination is shown:

The data can be transferred by copy&paste:

The display precision can be configured in the settings window:

