R is open source, is similar to S and you can find ample support groups online. The only down side is that R does not have a good GUI (yet ..). It does have a rudimentary data GUI
4) E Views
5) For Bayesian Inference
7) Jim LeSage’s econometrics toolbox
8) Office 2007 and Excel 2007 (www.microsoft.com) 🙂
Office 2007 and Excel 2007 now supports up to 1,048,576 rows. If you were going to make the upgrade anyhow, it might save you a few bucks over an expensive statistics package. The statistics plugin for Office 2007 is a lot better than previous versions as well. Runs almost as many analytics as SPSS.