Has anybody tried the variants to MATLAB? Two that I know are: 1. Octave - www.octave.org, and 2. SciLab - www.scilab.org. Both of them are freewares. And both are supposedly compatible with MATLAB. However, I haven't been able to test either of them or read through their websites yet to see how good compatibility is. Has anyone used either of these packages? Comparisons with MATLAB in terms of performance (speed), included functions etc.? I would be grateful to anybody who has something constructive to say. Thanks!