Free Grade Curving software

These programs are provided without any cost or support:

Grades is a C program which uses gnuplot to generate a histogram. It will run on any computer which has a C compiler and gnuplot. Download the tar.gz file here
Curve is a perl script which requires a perl interpreter. Here is Perl for Windows Download curve
gr.py is a python script written by Sigurd Angenent. To use it, download and install python on your computer (it's free). Running 'python gr.py' in the directory in which all grade files are stored produces a "curve" in the file 'histogram.eps'.