Rt-Plot
Rt-Plot is a tool to generate Cartesian X/Y-plots from scientific data. You can enter and calculate tabular data. View the changing graphs, including linear and non linear regression, interpolation, differentiation and integration, during entering. Rt-Plot enables you to create plots fast and... Features: unlimited number of data points, live calculated data points in data table, unlimited number of graphs, unlimited number of series in graph, unlimited number of calculated lines, linear regression, polynomial, non linear regression,interpolation, smoothing, differential, integral,...
http://www.rt-science.de/downloads/Rt-Plot_setup.exe - 5Mb - Download - Screenshot