i4mat_rref2, a MATLAB library which computes a version of the reduced row echelon form of an integer matrix.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
i4mat_rref2 is available in a MATLAB version.
polyominoes, a MATLAB library which defines, solves, and plots a variety of polyomino tiling problems, which are solved by a direct algebraic approach involving the reduced row echelon form (RREF) of a specific matrix, instead of the more typical brute-force or backtracking methods.
rref_test, a MATLAB program which calls rref() for the reduced row echelon form (RREF) of a matrix, which can be singular or rectangular.