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→Brief history of free statistical software: adding a little history, SAS was first software, and now has free version. |
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==Brief history of free statistical software==
[[SAS (software)]] was among the first statistical packages, released for mainframes in 1968.<ref name="stathistory">{{cite web |last1=The VSNi Team |title=Evolution of statistical computing |url=https://vsni.co.uk/blogs/evolution-of-statistical-computing |publisher=VNSi |access-date=12 June 2022}}</ref> SAS has since then released versions free to use, the most recent of which is SAS Studio.<ref>{{cite web |title=SAS on demand for academics |url=https://www.sas.com/en_us/software/on-demand-for-academics.html |publisher=SAS |access-date=12 June 2022}}</ref>
Some of the free software packages are from governments, for example [[Epi Info]], which is from [[Centers for Disease Control and Prevention|CDC]]<ref name=epiinfo>{{cite web|url=https://www.cdc.gov/epiinfo/index.htm|title=Epi Info|year=2008|publisher= CDC}}</ref> (Centers for Disease Control and Prevention). Some other software packages are from smaller or independent organizations or universities. Two other packages, [[R (programming language)|R]],<ref name=r>{{cite web|url= https://cran.r-project.org/|title= The R Project}}</ref> and [[PSPP]] are being developed as part of the [[GNU Project]] by a large group of individuals, many of them volunteers, all over the world. These packages are notable in that it is not just [[Open-source software|open source]] but also [[free software]] in the same sense that material written on Wikipedia is free: others can edit, use, and redistribute at will.
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