Statistics & Mathematics Software
The R Project for Statistical Computing
Current Version of R for Mac OS X
Current Version of R for Windows
The Comprehensive R Archive Network
The R Commander: A Basic-Statistics GUI for R
EasyReg International: Free Econometrics Software for Easy Regression Analysis
Gauss Source Code Archive at American University
A free Spatial Econometrics toolbox for Matlab
Matlab Tutorial: An Introduction to Matlab
OxMetrics and OxEdit (Another Matrix Programming Language, that's free.)
Biogeme (A free statistics package the focuses on discrete choice models.)
SpaceStat: A Spatial Econometrics Package
Statistics & Mathematics Resources
Research Analytics, Indiana University
Eric Zivot's Econometric Software Resources
Ronald Schoenberg's Archive Links
Probability and Statistics Resources
StatLib: Data, Software and News from the Statistics Community
Research Statistics and Statistical Analysis Directory
The Econometrics Journal Online ( A Lot of Econometric Links)
The Econometrics Journal Online can be found here as well
UC Berkeley Econometrics Laboratory
The World Wide Web Virtual Library: Statistics
Statistics & Mathematics Online Books and Notes
Statnotes: Topics in Multivariate Analysis
StatSoft: Electronic Statistics Textbook
Introductory Statistics Online
Handbook of Statistical Methods