Has an attractive user interface. Fairly simple to enter matrices. I use it mostly for Gauss/Jordan elimination. It crashes often, perhaps one time out of three. I would appreciate future versions saving matrices, for example, taking the solution from a G/J and multiplying by another vector. (As is, you must re-enter it.) Would also appreciate reducing non-square matrices to Reduced Row-Echelon Form. Looking forward to your next version.