PS-algol

{{More citations needed|date=November 2019}}

{{Infobox programming language

| name = PS-algol

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| paradigms = Multi-paradigm: procedural, imperative, structured

| family = ALGOL

| designers = Ron Morrison, Pete Bailey, Fred Brown, Paul Cockshott, Ken Chisholm, Al Dearle

| developer = University of St Andrews
University of Edinburgh

| released = {{Start date and age|1983}}

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| programming language = S-algol

| discontinued = Yes

| platform = ICL mainframe computers

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| influenced by = ALGOL 60, S-algol

| influenced = Napier88

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PS-algol is an orthogonally persistent programming language.{{cite conference |url=http://archive.cs.st-andrews.ac.uk/papers/download/ABC+83b.pdf |title=PS-algol: A Language for Persistent Programming |last1=Atkinson |first1=M.P. |last2=Bailey |first2=P.J. |last3=Chisholm |first3=K.J. |last4=Cockshott |first4=W.P. |author4-link=Paul Cockshott |last5=Morrison |first5=R. |author-link1=Ron Morrison |year=1983 |page= |conference=10th Australian National Computer Conference |book-title=Proceedings 10th Australian National Computer Conference |location=Melbourne, Australia |pages=70–79}}{{cite web |url=http://www.dcs.gla.ac.uk/~wpc/reports/compilers/compilerindex/t1.html |title=Persistent S-algol |last=Cockshott |first=W. Paul |author-link=Paul Cockshott |date=16 January 2006 |website=School of Computing Science |publisher=University of Glasgow |access-date=19 November 2019}}

PS-algol was an extension of the language S-algol implemented by the University of St Andrews and the University of Edinburgh, Scotland. S-algol was designed by Ron Morrison and extended by Pete Bailey, Fred Brown, Paul Cockshott, Ken Chisholm, and Al Dearle. These extensions were additional standard functions that provide a persistent heap that survives termination of PS-algol programs.

PS-algol was the world's first fully implemented persistent programming language,{{cite conference |url=https://research-repository.st-andrews.ac.uk/handle/10023/1665 |title=Orthogonal Persistence Revisited |last1=Dearle |first1=Alan |last2=Kirby |first2=Graham |last3=Morrison |first3=Ron |author3-link=Ron Morrison |year=2009 |conference=2nd International Conference on Object Databases (ICOODB 2009) |book-title=Lecture Notes in Computer Science vol. 5936 |location=Zurich, Switzerland |page=1–22|hdl=10023/1665 }} and had many users both in academia and, notably, in International Computers Limited (ICL) research labs.{{cite journal |last1=Atkinson |first1=Malcolm |last2=Morrison |first2=Ron |last3=Pratten |first3=Graham |title=PISA - A Persistent Information Space Architecture |journal=ICL Technical Journal |date=May 1987 |volume=5 |issue=3 |pages=477–491 |url=https://www.fujitsu.com/ie/imagesgig5/ICL-Technical-Journal-v05i03.pdf |access-date=21 Feb 2022}}{{cite journal |last1=Greenwood |first1=R. Mark |last2=Guy |first2=Michael R. |last3=Robinson |first3=D. John K. |title=The use of a Persistent Language in the Implementation of a Process Support System |journal=ICL Technical Journal |date=May 1992 |volume=8 |issue=1 |pages=108–130 |url=https://www.fujitsu.com/ie/imagesgig5/ICL-Technical-Journal-v08i01.pdf |access-date=21 February 2022}}