• AMOS Homepage Has information about the structural equation modeling package AMOS written by James Arbuckle. Includes links to a demo version of the software.
• BMDP
• Cytel Software This company specializes in software for exact tests (or permutation tests), typically used with small-sample categorical data. They publish StatXact for general permutation tests, LogXact for exact logistic regression, and EaSt, for planning sequential clinical trials.
• DataDesk This is Paul Velleman's exploratory data analysis tool for the Macintosh. Lots of neat graphics to help you get a handle on relationships in your data. A demo is available for this program.
• DataMost Purveyors of a handful of statistical and numerical analysis products, including StatMost (statistical analysis), Numerica (numerical analysis), and DataTrix (a spreadsheet-type package).
• Easystat This is a simple package which specializes in ANOVA/ANCOVA models. Information is also available in German.
• Ecstatic This is a Windows stats package. You can download a demo version, which is fully functional except that it only allows 20 variables.
• Epi Info information page Has lots of information about Epi Info, a freeware epidemiological statistics program. The author of this page (Greg Fegan) publishes some books on using Epi Info, and give links to the software itself, as well as other resources for users of the package. You can also find information on Epi Info in French.
• EViews EViews is a forecasting product with an emphasis on econometrics from Quantitative Micro Software (QMS--not to be confused with the printer company).
• GB-Stat This is a general statistical package, available for Windows or Mac. Lists a couple of texts as "related book titles", but it's unclear if these books actually refer to this package, or if they just cover some of the methods implemented by the program.
• GraphPad GraphPad and GraphPad Prism, a graphically oriented package for Windows. Some interesting guides to some statistical analyses are available, as is a demo of the Prism software.
• Guide to Available Math Software This is a resource maintained by NIST. The title pretty much says it all. It offers a useful "problem decision tree" approach to indexing.
• Kovach Computing Services This group provides consulting services, as well as distributing a handful of shareware statistics packages such as SIMSTAT, MVSP, and Oriana. Also includes a list of sites.
• Kwikstat Information on the Kwikstat program. Downloadable demos are available. Some CAI (Computer-Aided Instruction) software can be found here as well.
• MacWavelets This program offers 1D and 2D wavelet analysis (a form of multiresolution frequency analysis) for Macintosh users. A demo version is available, and the manual is available online.
• Mathematical Software Archives at the University of Tennessee, Knoxville This is a nice archive, featuring reviews of software, as well as interactive texts (e.g. Mathematica notebooks), and links to other resources.
• MedCalc This statistics package is aimed at biomedical researchers. Links are provided to documentation (in Word 6.0 format), and a demo version of the program.
• Minitab Home page of Minitab statistical software. Includes the standard product information, technical support, software macros, etc. See their extensive list of companion textbooks for use with their software.
• Mx Home Page This is a support page for the Mx software package, useful for statistics (particularly structural equation modeling) as well as general matrix algebra computations. Developed by Michael Neale.
• NCSS Home Page The home page of the statistical software package NCSS (Number Cruncher Statistical System). Includes link to freeware probability calculator for Windows, and a Freeware version of NCSS suitable for teaching or relatively simple data analysis.
• Netlib The netlib server (maintained by AT&T and U. Tenn.) has lots of math and statistics routines. This will take you to a search engine.
• NetMul home page Interesting forms-based multivariate analysis system. Enter your data via a form (or upload via anonymous ftp), and select PCA, Correspondence Analysis, or Multiple correspondence analysis, and off you go! Results are computed online and returned to your browser. Based on the ADE-4 engine, which you can download as well.
• NPSTAT home This program uses computer-intensive methods (e.g. randomization tests) for nonparametric tests. Also gives a nice reading list on computer-intensive nonparametric methods and statistics in general.
• Power Analysis software for PC's This is a huge list of power analysis programs available for PC's. Kudos to Len Thomas at the University of British Columbia for putting this together.
• PROPHET Software This is a general purpose statistical software package, with an optional sequence analysis module. From NIH's National Center for Research Resources. Public Domain/Shareware Statistics Software List This is a somewhat useful guide to some of the software that is available in the online archives (e.g. SimTel). Unfortunately, the info here is quite old (c. 1989), so much of it may be out-of-date.
• The SAS Institute This server provides information on the SAS Institute and it's products and services. It even has a listing of job openings at the Institute. Good for SAS users. Allows access to files on their BBS.
• SciTech: Software for Science SciTech is a clearinghouse for all kinds of scientific software, from Astronomy to Chemistry to Social Sciences. They have a huge selection of commercial statistics software. I never knew there were so many packages available!
• SIMSTAT Home Page Provides information on (and demos of) SIMSTAT and MVSP (MultiVariate Statistical Program), as well as the special-purpose STATITEM (for item analysis), EASY FACTOR ANALYSIS, and BANNER programs.
• SpaceStat  SpaceStat is a program for spatial data analysis, developed at the Regional Research Institute at West Virginia University. Info on capabilities, platforms, and pricing can be found here, as well as technical reports related to use of the software.
• S-Plus Home Page Brought to you by Mathsoft. Here you will find product information, consulting, and their newsletter, S-Press.
• SPSS Inc. Yes, the makers of the very popular SPSS software package (and my current employers). This page gives info on their products, technical support, services, and publications, including their interesting online user magazine, Keywords.
• Stata Home Page This page gives info on the Stata stat package. You can get in-depth product information, tech support stuff for users, and a list of other statistical software companies. They also offer NetCourses in how to use their software.
• STATGRAPHICS This page supports the STATGRAPHICS package for Windows. Site includes obligatory product and contact information, tech support, and a snazzy Graphics Gallery. You can also get additional info on the program and training from the Statistical Graphics Corporation.
• Statistical Solutions, Ltd.
• This vendor of statistical software is located in Cork, Ireland. They still offer many of BMDP's pre-buyout packages.
• Statlib This is a fantastic source of info--includes lots of datasets and code (xlispstat, R, BLSS, etc.), as well as info on ASA and IMS.
• Statsoft, Inc. From the makers of Statistica, this web page gives information, excerpts from review articles, and testimonials about their software. The front page is somewhat graphics-intensive, so be prepared to wait....
• StatView This long-time staple for Macintosh users is now available for Windows as well. The same company also publishes SuperANOVA, which currently is still Mac-only.
• Statware, Inc. Home page of Statware, makers of the Statit graphical data analysis package. Site offers the usual product descriptions, contact information, and an astonishing array of demos available for a wide variety of platforms--including several flavors of UNIX.
• SUDAAN Home Page "SUDAAN software is specifically designed for the analysis of clustered data arising in many applications, including complex sample surveys, randomized experiments, and epidemiologic studies."
• Survey Analysis Software Summary This is a nice resource from the Survey Research Methods Section of the ASA. Gives some comparative information on a variety of software packages for analyzing data with complex sampling schemes, and references to published review articles.
• Unistat This is a complete statistics package which offers easy integration with Microsoft Office (supports OLE/DDE). A demo is available which only works with the canned data sets provided. For Windows only.
• ViSta Forrest Young's ViSta homepage. Vista is a GUI stats package based on the XLispStat engine. You can download it from here (it's free). Available for Mac, Windows, and Unix.
• xlSTAT Home Page Another Microsoft Office-friendly offering, here's a multivariate package that uses Microsoft Excel as it's engine. Shareware and Professional versions are available, as is a demo version.
• XLStatistics This is a set of Excel notebooks designed for teaching and basic statistical analysis. Written by Rodney Carr at Deakin University Warrmanbool.

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