An easy to use implementation of a number of modular (mod 2) matrix algebra tools.

Simply download the files into a local directory and point a JavaScript-enabled browser at mod2matrixtools.html.

All the following, in modulo-2 algebra:

• Berlekamp-Massey algorithm (finds the simplest linear feedback shift register that will generate a given binary sequence)
• Simplify Linear System (reduces or completely solves a system of linear equations, using Gaussian elimination)
• Invert a Matrix (inverts a square matrix, using the Gauss-Jordan method)
• Multiply two matrices
• Transpose a matrix
• Flip a matrix

Not that I know of. The maximum size of matrix is theoretically limited only by your browser. I've tested it up to sizes of 100 x 100.

Because I wanted to host the tools on a webserver that doesn't implement PHP.

Sure. Just create a local branch and submit a pull request. Feel free to notify me of any errors. Requests like "please add feature 'x'" will be ignored.

The matrix handling functions live in the .js file starting around line 236. I put some basic documentation in the code. If you need to know more than that then read up on linear algebra and field theory.