My impression is that Python has become something of a standard in the research community, with tools like SciPy, NumPy, and SAGE widely used, though Perl has a library comparable to NumPy in PDL, and there is a SciRuby, There is nothing else like SAGE except for the commercial packages Mathematica and MATLAB. There is also the granddaddy of them all, LISP, but I don't want to press that on our community; it is intimidating, however useful once one learns it.
On the statistical side there is R and (wince) Excel. What do people think? Who is using what? Randolph
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