There are a couple of web sites available with published reviews, or
excerpts of published reviews comparing different Windows data analysis
software packages. Most of the packages are capable of nonlinear curve
fitting with built in or user entered equations. In addition, your
comments on the packages that you have used would also be welcome. You
can find these sites at:
http://www.umass.edu/microbio/sciplot
and
http://www.orst.edu/~bulsecod/winanal.htm
Dylan Bulseco
bulsecod at bcc.orst.edu