MATLAB alternative?

When I took a control systems class a couple of years ago, there was discussion of a shareware/freeware equivalent to MATLAB, analogous to OpenOffice and MS Office. I’ve moved 3 times since that class, so I can’t find my notes to recall what it was called.

Anyone here who can help me out?

octave

Thanks. That was fast…

There’s also Scilab. Scilab is very much MATLAB-like in interface and functionality, but the code isn’t strictly compatible. (Neither, in my admittedly limited experience, is Octave, particularly plotting functions.) Scilab also seems to be somewhat more expandable. Try both and see what you like best.

Also there’s Maxima which is a symbolic algebra solver analogous to Mathematica. I haven’t really had the chance to play with it extensively, but it looks pretty cool.

Stranger