Free Software
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This page lists primarily statistical software, along with mapping, spreadsheets, database, stuff to do data analysis or management.  At the bottom of this page, I list some pages that link to other free software and computer related stuff, like browsers, office suites, computer security, etc. 

Please note: I've only used a few of these software programs a little bit, so I can't say much about how good they are, whether they crash, have viruses, or much else about them.  If you use them, please let me know how well they work.  If there are any major problems, I'll take them off this list.  I'm sorry to add the usual disclaimer that, while I don't expect any probems with them, if you use any of these, I can't be responsible for any problems that may occur. Also, I'm not necessarily recommending any, just providing info and links.



 Statistics

There are many free statistical programs. Here   http://en.citizendium.org/wiki/Free_statistical_software   for an article at Citizendium about free statistical software (draft as of April 2009).
Also see here   http://gsociology.icaap.org/methods/softsum.html    for a brief summary of some of the programs.

Several of these stat programs were reviewed in an article in the Journal of Industrial Technology, (Volume 21-2, April 2005).   http://www.nait.org/jit/current.html   "A Short Preview of Free Statistical Software Packages for Teaching Statistics to Industrial Technology Majors"  Ms. Xiaoping Zhu and Dr. Ognjen Kuljaca.  The programs reviewed include Vista, IDAMS, IRRISTAT, OS3, PAST and Instat+
  Another review looked at R and mentioned a few others (OpenStat and MicroOsiris). "Free Statistics Software, Yours, Free to keep...."   Felix Grant, Scientific Computing World, Sept/Oct 2004,    http://www.scientific-computing.com/scwsepoct04free_statistics.html  


I also compared 7 programs (stat4u, easyreg, epidata, WinIDAMS, instat, MicrOsiris and Epi Info), when data sets have no missing values, shown here   http://gsociology.icaap.org/methods/comparing_freestaprograms.html   Basically, for correlation and simple regression, all gave the same results. Some also had the same results for forward stepwise.

I also compared 3 programs (MicrOsiris Epi Info, WinIDAMS), when data sets do have missing values, shown here
http://gsociology.icaap.org/methods/comparing_freestaprograms_missing.html   Basically, for correlation and simple regression all gave the same results. These are also the only programs that I can get to successfully and reliably handle missing data with my data sets. WinIDAMS isn't so easy but after a lot of tries and emails with UNESCO staff, I understood it well enough to get it to work. Also, Stat4U didn't work well on my data, but may work well on other data.

Epi Info

Epi Info 2000 Windows   is available from   http://www.cdc.gov/epiinfo/index.htm
It is very large in size and will take considerable time to download.  This is a program for entering and analyzing data, developed for epidemiologists, but can be used for basic statistical analysis by anyone.  This program is also not easy to learn on your own, but see a couple of free on line manuals:

    Data Analysis With Epi Info. B. Burt Gerstman (Nov. 2000)   http://www.sjsu.edu/faculty/gerstman/EpiInfo/   This is for the dos version.
        This site also links to Introduction to Epi Info and other resources   http://www.epiinformatics.com/        
Relational Database Management Systems for Epidemiologists   http://www.idready.org/rdbms/database_RDBMS.html   has a powerpoint tutorial for epi info and a step by step pdf guide.

The North Carolina Center for Public Health Preparedness Training Website  http://nccphp.sph.unc.edu/training/index.html   has free on line training classes for epi info.

   CDC's tutorials  http://www.cdc.gov/epiinfo/tutorials.htm

 
CDC/Census Bureau software
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Answer   http://www.cdc.gov/hiv/topics/surveillance/resources/software/answr/index.htm   AnSWR is a software system for coordinating and conducting large-scale, team-based analysis projects that integrate qualitative and quantitative techniques.

ez-text   http://www.cdc.gov/hiv/topics/surveillance/resources/software/ez-text/index.htm   a software program developed to assist researchers create, manage, and analyze semi-structured qualitative databases.

CSPro (Census and Survey Processing System) http://www.census.gov/ipc/www/cspro/index.html    a public-domain software package for entering, tabulating and mapping census and survey data.

Integrated Microcomputer Processing System (IMPS) http://www.census.gov/ipc/www/imps/index.html   "performs the major tasks in survey and census data processing: data entry, data editing, tabulation, data dissemination, statistical analysis and data capture control."
 


R, a very widely used program, with tons of documentation
R: The Comprehensive R Archive Network  http://cran.r-project.org/   "R, also known as "GNU S", is a language and environment for statistical computing and graphics."  It is, I understand, like S+, a statistical language.  R is better for graphics than SAS.  However, R is complex, and takes a lot of study, so only use this if you have complex statistical or graphical needs.  If this site doesn't work, try http://cran.us.r-project.org/   in the US, or   http://www.stats.bris.ac.uk/R/   in the UK.

One graphical interface is described here   http://socserv.socsci.mcmaster.ca/jfox/Misc/Rcmdr/   and available here   http://cran.r-project.org/web/packages/Rcmdr/index.html   This covers some basic stats.
Another interface is    http://rkward.sourceforge.net/    From the website "RKWard is meant to become an easy to use, transparent frontend to the R-language, a very powerful, yet hard-to-get-into scripting-language with a strong focus on statistic functions. "

R help mailing list   https://stat.ethz.ch/mailman/listinfo/r-help   announcements, questions and answers, etc.

    Tutorials, faqs, guides..... Many of these were posted on the American Evaluation Association email list.
    The R site lists other guides   http://cran.r-project.org/other-docs.html   including Simple R, and many others.
    R faq page   http://lib.stat.cmu.edu/R/CRAN/doc/FAQ/R-FAQ.html    basics, programming, bugs, etc.
    Using R for psychological research   http://personality-project.org/r/
    Tutorial  http://www.math.ilstu.edu/dhkim/Rstuff/Rtutor.html
    Why R   http://www.statland.org/R/WhyR.htm   from  Bob Hayden, some handouts for R. 
    R Graph Gallery   http://addictedtor.free.fr/graphiques/    graphs and code on how to get them.
    Paul Murrell's page   http://www.stat.auckland.ac.nz/~paul/   has slides and some instructions for R.
    Rtips   http://pj.freefaculty.org/R/Rtips.html   various tips.
    Notes on the use of R for psychology experiments and questionnaires   http://www.psych.upenn.edu/~baron/rpsych/rpsych.html   J Baron and Y Li, 2006.
    Kickstarting R   http://www.unt.edu/rss/class/splus/Rkickstart/index.html   from Research and Statistical Support, U North Texas


Other - General packages
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ADE-4    http://pbil.univ-lyon1.fr/ADE-4/home.php?lang=eng    ADE-4 is a multivariate analysis and graphical display software package.
    I sometimes have difficulty with this link. I'll leave it here anyway.


AM statistical software    http://am.air.org/    AM is a statistical software package for analyzing data from complex samples, especially large-scale assessments.


Arc regression software   http://www.stat.umn.edu/arc/software.html   "Arc is a free, unique, menu-driven statistical analysis tool for regression problems." The current version is from 2004.

 
Easyreg   http://econ.la.psu.edu/~hbierens/EASYREG.HTM  This is actually an econometrics program, but it apparently does basic statistics as well, and some very advanced statistics related to econometrics, including time series analysis.
    There is a tutorial for Easyreg here   http://www.clarku.edu/faculty/mcallan/Econ160/Econ160main.html   by Myles J. Callan


 
Epidata     http://www.epidata.dk/    "a data-entry and data-checking program for Microsoft Windows."  Epidata is data entry and data checking. It can also do some basic analysis.
 A related site is Pepi for windows at   http://www.brixtonhealth.com/    - some statistical tests and descriptives.  This site also includes a few other programs such as EpiGram, simple diagramming software, and SampleXS, which is a sample size calculator, which allows for design effects.  The help box has very good documentation about sampling and what the program does.  For social surveyors, you need to change the confidence interval to 5 rather than .5.


GenStat Discovery   http://www.vsni.co.uk/software/genstat-discovery/   "GenStat Discovery Edition is a free version of GenStat developed by VSN International for use by not-for-profit research organisations, charities and educational institutes based in the developing world."


Instat    http://www.ssc.rdg.ac.uk/software/instat/instat.html    general statistical package. I've used this to import an excel file. Correlations do okay when correlating two variables. At present, the last case has to have values for all variables for Instat to completely read the data, at least for correlation.

 
Irristat    http://www.irri.org/science/software/irristat.asp     Another program. Have to regeister to download this. "IRRISTAT is a computer program for data management and basic statistical analysis of experimental data.  IRRISTAT has been developed primarily for the analysis of data from agricultural field trials, but many of the features can be used for analysis of data from other sources."  This is from the Biometrics and Bioinformatics Unit, International Rice Research Institute, in Metro Manila, Philippines.
    Irristat is used for analysis in an agricultural FAO report    http://www.fao.org/DOCREP/005/Y4391E/y4391e00.htm   in the forward and the following pages.
http://www.fao.org/docrep/005/Y4391E/y4391e0b.htm, http://www.fao.org/DOCREP/005/Y4391E/y4391e08.htm

 
MicrOsiris    http://www.microsiris.com/     This program "is derived from OSIRIS IV, a statistical and data management package developed and used at the University of Michigan and includes special techniques for data mining and analysis of nominal- and ordinal-scaled data.  Its free but can contribute $25 to get rid of start up reminder screen.

 
Openstat     http://www.statpages.org/miller/openstat/    Free statistical program.  I've used this one a bit and it is comparatively easy to use, except I have problems importing excel or csv files.    There is also a linux version of this program, and the author is frequently updating the program.  


PSPP   http://www.gnu.org/software/pspp/   "is a program for statistical analysis of sampled data. It is a Free replacement for the proprietary program SPSS, and appears very similar to it with a few exceptions."   I'm not sure how accessible or usable this is yet.  One article   http://www.linux.com/feature/150363   suggests it isn't yet complete, but is worth looking at.
  This page   http://www.gnu.org/software/pspp/get.html   lists where you can get it, in all the different versions (windows, unix, mac, etc)
  A discussion list is here   http://lists.gnu.org/mailman/listinfo/pspp-users   and a blog is here   http://www.cecaps.ufmg.br/pspp/?lang=en   (English version)


SalStat    http://salstat.sourceforge.net/    runs on windows, linux, mac. It is in beta, but according to the site, "it can already do a range of descriptive statistics, t tests (paired, unpaired and one sample), and 3 kinds of correlations." Last updated in 2003.


SOFA - Statistics Open For All   http://www.sofastatistics.com/home.php   Currently being developed.  Has some basic procedures, mean, median, sd, independent and paired t-tests, Mann-Whitney U, Wilcoxon Signed Ranks, Pearson's Chi Square, one-way ANOVAs, Kruskal Wallis H, and Spearman's and Pearson's correlations.  Can link directly to data from MySQL, SQLite, MS Access, and MS SQL Server, and can import data in csv or Excel format.  Further information is here   http://sourceforge.net/projects/sofastatistics/



Statistical lab   http://www.statistiklabor.de/en/   for teaching stat and for doing some analysis.

 
visicube   http://www.datamology.com/   At least the 'basic' program is free. Add ons will have a fee attached.

 
Vista   http://forrest.psych.unc.edu/research/   visual statistical system.

 
WinIDAMS  http://portal.unesco.org/ci/en/ev.php-URL_ID=2070&URL_DO=DO_TOPIC&URL_SECTION=201.html   WinIDAMS is a software package internationally developed by UNESCO for the validation, manipulation and statistical analysis of numerical data of any kind.  (This site takes a while to load.)
  I've been using this program for a while. Here are some tips:   http://gsociology.icaap.org/methods/winidams_tips.html
   

Winstat   http://math.exeter.edu/rparris/winstats.html   bunch of stat features.   


Zelig   http://gking.harvard.edu/zelig/   "Zelig is a single, easy-to-use program that can estimate, help interpret, and present the results of a large range of statistical methods." Based on R.



On line statistical analysis

Brightstat   http://www.brightstat.com    bunch of on line procedures.

Statistics Online Computational Resource    http://www.socr.ucla.edu/    another on line


Qualitative data analysis (qda)

What is qda, how to do it, what software... look at these pages.

On line qda   http://onlineqda.hud.ac.uk/index.php   some how to, links to software, reviews of software
Qual page   http://www.qualitativeresearch.uga.edu/QualPage/index.htm   lists some software


TextStat    http://www.niederlandistik.fu-berlin.de/textstat/software-en.html    free simple text analysis software.  Word counts, and also shows where the words appear.


Weft QDA   http://www.pressure.to/qda/   Weft QDA is an easy-to-use tool to assist in the analysis of textual data such as interview transcripts, written texts and fieldnotes.


Wordle  http://www.wordle.net/   is a toy for generating “word clouds” from text that you provide.  Not exactly analysis, but looks kind of interesting.


Classifcation and data mining
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Guide  http://www.stat.wisc.edu/~loh/guide.html   Classification and regression tree software.


Rule Discovery System    http://www.compumine.com/web/public/home    appears to be free data mining software, including classification and regression tree analysis.


Tanagra   http://chirouble.univ-lyon2.fr/~ricco/tanagra/index.html   data mining


Weka   http://www.cs.waikato.ac.nz/~ml/   machine language used for data mining. 
   Here are some tutorials
   http://maya.cs.depaul.edu/~Classes/Ect584/Weka/   
   http://research.cs.queensu.ca/home/cisc333/tutorial/Weka.html  
  
 


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Lists of free stat software


John C. Pezzullo's list of free statistical software
  http://statpages.org/javasta2.html   The First and MAIN list of software.  I got links to several of the stat packages listed here from Mr. Pezzullo's site, which lists more info about each package.
 
List of free software  http://en.freestatistics.info/stat.php   lists various packages, some of which are listed above.
 
StatSci list of free software   http://www.statsci.org/free.html   also lists some of the above.

List of free statistical software   http://statistiksoftware.com/free_software.html    list of some programs with lots of notes about many of them, i.e., features, requirements.

Impoverished Social Scientist's Guide   http://maltman.hmdc.harvard.edu/socsci.shtml   stat software and some other stuff.

Association for Survey Computing software index   http://www.asc.org.uk/Register/index.htm    lists some free stat software, although there isn't a seperation between free and commercial, so it's kind of  hard to find the free ones.


Stat with excel


Statistics with excel   http://phoenix.phys.clemson.edu/tutorials/excel/   see chapter 10

Excel For Statistical Data Analysis   http://home.ubalt.edu/ntsbarsh/excel/excel.htm   general tutorial

Excel for Statistics   http://www.reading.ac.uk/ssc/software/excel/home.html   some overviews and some tips and warnings of problems


Using Excel for Statistical Data Analysis - Caveats   http://www-unix.oit.umass.edu/~evagold/excel.html   points out a few problems.




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Free Mapping/GIS software 

lists of software

GEO Community http://www.geocomm.com/ lists and reviews some free viewers, here
http://spatialnews.geocomm.com/features/viewers2002/
and here
http://software.geocomm.com/viewers/general/
Some of the viewers or programs can do basic mapping.


http://opensourcegis.org/ has gis and related software


http://freegis.org/   
The FreeGIS Project provides
* software overview on free Geographic Information Systems (this web site)
* communication on developments, plans, infos on free GIS software and free Geo-Data (mailing list)
* software and data prepared for direct use (CD)




Software
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Accuglobe   http://www.accuglobe.net/   a free gis program. I haven't tried it but it looks nice.
   Apparently, Michigan is also using it,   http://www.michigan.gov/documents/CGI_min0306_164943_7.pdf   
   listed here   http://www.geostor.arkansas.gov/Portal/htm/Data_Viewers.htm   which says "This free software, created by Digital Data Technologies, Inc., has the most functionality of any free GIS data viewer."  Says users can view and edit shapefiles, do some basic analysis.


Christine gis system   http://www.christine-gis.com/en/index.htm  
The web site says "Christine is a useful, easy-to-use tool that brings geographic
information to your deskop." I don't know anything about it. The VIEWER is free but the full program is shareware. The program is listed in the Gislounge and other places:

gislounge  http://gislounge.com/free-data-viewers/
Geographic Information Systems (GIS)   http://lib.utsa.edu/Research/Subject/gisguide.html   from the UTSA library
          NASA Global Change directory   http://gcmd.nasa.gov/records/CHRISTINE_GIS.html


Diva-Gis   http://www.diva-gis.org/   a mapping program. The web site says this "is a free mapping program, sometimes called geographic information system (GIS), that can be used for many different purposes."
  Listed here
  http://www.fws.gov/arsnew/print/print_report.cfm?arskey=21066   US Fish & Wildlife Service - Journal Entry
  http://ars.usda.gov/research/publications/publications.htm?seq_no_115=221326&pf=1   
  http://biology.usgs.gov/cbi/informatics/dss/cbidsstools.html   USGS tools



epi info also can do maps.
http://www.cdc.gov/epiinfo/


The Google Map Creator  http://www.casa.ucl.ac.uk/software/gmapcreator.asp   is a freeware application designed to make thematic mapping using Google Maps simpler. The application takes a shapefile containing geographic areas linked with attributes and automatically generates a working Google Maps website from the data.


GRASS GIS (Geographic Resources Analysis Support System)   http://grass.itc.it/index.php  is an open source, Free Software Geographical Information System (GIS) with raster, topological vector, image processing, and graphics production functionality that operates on various platforms through a graphical user interface and shell in X-Window. It is released under GNU General Public License (GPL). 
  
Grass is listed here
    Brief overview of Grass, Qgis,   http://www.csc.noaa.gov/cz/2007/Coastal_Zone_07_Proceedings/PDFs/Monday_Abstracts/3468.Racicot.pdf     
    and here   http://gcmd.nasa.gov/records/GRASS.html   


gvSIG   http://www.gvsig.gva.es/   "is a tool oriented to manage geographic information."
   This program is listed here   http://gcmd.nasa.gov/records/gvSIG.html   


JUMP   http://www.jump-project.org/    The foundation of The JUMP-Project is a suite of free, open-source applications that provide an extensible API and graphic user interface (GUI) for viewing and manipulating spatial data-sets.

The Jump Project is also listed in this report  Proof of concept and state of the art in FOSS Geospatial Technology   http://www.reliefweb.int/rw/lib.nsf/db900sid/OCHA-6UFKXW/$file/FIGS_Working_Group_Doc_%20Final%204.pdf?openelement  
  


MapWindows   http://emrg.usu.edu/software/mapwindow/    another GIS package. The web site documention says "MapWindow is a "Programmable Geographic Information System" that supports manipulation, analysis, and viewing of geospatial data and associated attribute data in several standard GIS data formats."
 I think this is the same as this  MapWindows GIS   http://www.mapwindow.org/   has a GIS program along with a lot of other stuff.


Map Maker Gratis is free   http://www.mapmaker.com/    The full professional version is available for free to not-for-profit organizations, educational establishments, and students in Africa.


Public Health Mapping tools - improved data for action  
http://www.who.int/health_mapping/tools/en/   includes a mapping program, although I don't see how to get it.



Quantum GIS (QGIS)   http://qgis.org/    "is a user friendly Open Source Geographic Information System (GIS) that runs on Linux, Unix, Mac OSX, and Windows. QGIS supports vector, raster, and database formats."
   Qgis is listed here   http://www.wsdot.wa.gov/mapsdata/geodatacatalog/default.htm      
   Brief overview of Grass, Qgis,   http://www.csc.noaa.gov/cz/2007/Coastal_Zone_07_Proceedings/PDFs/Monday_Abstracts/3468.Racicot.pdf     



TNTlite  http://www.microimages.com/tntlite/   According to the authors, "TNTlite is a FREE geospatial analysis system providing a complete fully featured GIS, RDBMS, and automated image processing system with CAD, TIN, surface modeling, map layout and innovative data publishing tools. All this capability is available in a single integrated system with an identical interface, functionality, and geodata structure for use on Mac OS X, Windows, Sun Solaris, and popular Linux platforms."  There are limits on the complexity of the project in this free version. Can do simple projects but not complex.
     TNTlite is listed here   http://gcmd.nasa.gov/records/01-TNTlite-00.html   



Other software, speadsheets, databases, graphics,    
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Spreadsheets


SpreadCE   http://www.byedesign.freeserve.co.uk/   works on multiple systems including windows, pda's and other stuff. Shareware, but not limited.


Object oriented spreadsheet   http://www.abykus.com/   bunch of features different from regular spreadsheets.


Gnumeric  http://projects.gnome.org/gnumeric/   free spreadsheet.
Gnumeric is mentioned here
http://heasarc.nasa.gov/W3Browse/version-history.html
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1215481


Some of the office suites listed on the page below also have spreadsheets
http://fire.prohosting.com/pubinfo/freesoft.html   


Databases

PostgreSQL   http://www.postgresql.org/   highly-scalable, SQL compliant, open source object-relational database management system. 

Firebird    http://www.firebirdsql.org/    Another relational database.

This article   here    from 2005 is a review of mysql, postgre and firebird
This site   http://www-css.fnal.gov/dsg/external/freeware/pgsql-vs-mysql.html   is a comparison of PostgreSQL and MySQL.


This site has an intro video about databases   http://www.databasejournal.com/video/   and more advanced ones.


Graphics

Gnuplot   http://www.gnuplot.info/   Need programming ability to use this but supposed to produce professional quality graphs. Still under development, see here  http://gnuplot.sourceforge.net/  Recent version released September 2007.  

The gnuplot info site links to tutorials.  Some other tutorials are:

Intro and faq's on gnuplot   http://t16web.lanl.gov/Kawano/gnuplot/index-e.html   How to use it, do stuff with it, seems pretty extensive.

CTG - Gnuplot Tutorial   http://www.challenge.nm.org/ctg/graphics/tutorial.shtml   brief, one page.


Ploticus   http://ploticus.sourceforge.net/doc/welcome.html   "A free, GPL, non-interactive software package for producing plots, charts, and graphics from data."


EVE Embedded Vector Editor    http://www.goosee.com/    graphics program.  Recommended by a colleague. I havent' tried it, but supposed to be very powerful and useful.


Dia   http://live.gnome.org/Dia   "Dia is a GTK+ based diagram creation program for Linux, Unix and Windows ... Dia is roughly inspired by the commercial Windows program 'Visio', though more geared towards informal diagrams for casual use."



Other stuff, doing surveys on the web, misc,    
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Doing Surveys

ResearchInfo.com    http://www.researchinfo.com/docs/software/index.cfm    list of software programs for designing, creating surveys, some analysis.  Some are freeware, some limits, some no limits.


Questionnaire Programming Language   http://qpl.gao.gov/   "QPL is a complete web questionnaire development and content analysis system. Using a simple language to describe your questionnaire, it automatically builds all the files you need to create a dynamic web site."


Misc  including security, office suites, browsers, software portals.
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There is lots of security, antivirus, antispyware, etc.  For a good listing of stuff, see here  
http://fire.prohosting.com/pubinfo/secure.html  

Free software like browsers, office suites, portals, etc
http://fire.prohosting.com/pubinfo/freesoft.html  


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didn't work, 3/28, I'll check again
And see more manuals here   http://www.sph.emory.edu/~cdckms/   Windows version, updated Feb 2007