A graphical tool to visualize and compute signal-flow graphs (or Mason graphs) written in C++ with Qt which uses either Matlab (commercial) or GNU Octave as the computational backend. It serves as a fully interactive editor to signal-flow graphs and allows you to run additional custom Matlab/Octave scripts as well as saving your graph files and results.

More details can be found here: http://saschpe.wordpress.com/2010/03/01/masonry-a-mason-graph-tool/

A Windows build is provided.