vcd2svg can parse Value Change Dump (VCD) files and draw an impulse diagram using Scalable Vector Graphics (SVG). It works together with the GHDL open-source simulator.
A way to use XFOIL for airfoil analysis with MATLAB. Utilizes Perl to provide a pty to interface with XFOIL and to parse results to send back to MATLAB. "MatPerlXFOIL: Half MATLAB, Half Perl. Half XFOIL. EXELSIOR!"