Regression and Curve Fitting

2D Curve Fitting
Online curve fitting and data plotting software based on Pade (rational) approximants.
http://www.soft4structures.com

FuReA
Software tools for regression analysis of fuzzy data. Simulate non-linear dependencies, detect outliers and observe results graphically.
http://www.fuzzy.ru/

Hirosoft
Information about Epicure software for risk regression using non-linear models and complex rate(person-year) computations.
http://www.hirosoft.com/

Least Squares Method Program
A nonlinear least squares fitting program that handles input errors or a covariance matrix on each axis. The curve fitting can use many curves simultaneously and stick them together with their parameters or points, in many dimensions.
http://www.prz.rzeszow.pl/~janand/

LeoStatistic
Data visualization and statistical analysis. Distribution histograms, curve and surface fitting, multivariate regression, near neighbors estimation etc.
http://www.leokrut.com/leostatistic.html

Multiple Regression Components for Delphi
Programs for analytical applications. Includes technical support.
http://www.aasdt.com/statistics/mlr.html

Nonlinear Statistical Regression Analysis
General linear and nonlinear statistical regression analysis.
http://www.nlreg.com/

Oakdale Engineering
DataFit curve fitting (nonlinear regression) and data plotting software.
http://www.curvefitting.com/

Online Regression Tools
A collection of tools to work out various types of regression online: linear, logarithmic, exponential, power, polynomial, multiple lineal, multiple polynomial, nonlinear...
http://www.xuru.org/rt/toc.asp

Spatial Statistics
Used for estimating large spatial autoregressions via maximum likelihood. Contains MATLAB and Fortran 90 software.
http://www.spatial-statistics.com/

Statistical Trending And Reporting System
21 CFR Part 11 compliant trending tool that includes linear regression, shelf life estimation, graphical analysis, SPC/SQC, and environmental trending.
http://www.integrativesolutions.net/stars.htm

ZunZun
Online data modeling and visualization. Fits 2D and 3D data to standard functions, and produces various plots, histograms, and error charts.
http://zunzun.com/