Algol 68 - 25 Years in the USSR  
   Interesting history of Algol 68 in the USSR and the Leningrad compiler.
   http://iti.spbu.ru/publications/eng/algol68.htm

László Csirmaz  
   There is an Algol 68 interpreter for DOS and Linux here.
   http://www.math-inst.hu/%7ecsirmaz/

Charles Lindsey's Home Page  
   Algol 68S compilers for Sun3, Sun Sparc, Atari ST and Acorn Archimedes.
   http://www.cs.man.ac.uk/~chl/

ELLA  
   Contains the source for an Algol 68 to C translator (but site now seems dead).
   ftp://ftp.dra.hmg.gb/pub/ella

Algol 68 Revised Report  
   Ongoing project to create machine readable Algol 68 Revised Report (this version in HTML).
   http://members.dokom.net/w.kloke/

A History of ALGOL 68  
   By C.H. Lindsey; ACM Digital Library, 1993, ISSN 0362-1340. Abstract of article from the Second ACM SIGPLAN Conference on History of Programming Languages, 1993. Full text for ACM members only.
   http://portal.acm.org/citation.cfm?id=155365

A Shorter History of Algol 68  
   A short text of the language's history.
   http://user.it.uu.se/~richardc/txt/ALGOL68.txt

Software Engineering with Algol 68  
   Sian Leitch's site with Debian port of Ctrans with extensive preludes and Web68
   http://www.sleitch.nildram.co.uk/algol68.html

Algol 68 Genie (Algol68G)  
   A fairly fully featured Algol 68 implementation (interpreter) for Linux, BSD and MacOS. Author of Algol68G is Marcel van der Veer. [Open source, GPL]
   http://www.xs4all.nl/~jmvdveer/algol.html

An Introduction To Algol 68  
   The second ACM SIGPLAN conference on History of programming languages.
   http://portal.acm.org/citation.cfm?doid=154766.155381

Algol 68 to C  
   Portable translator to allow compiling Algol 68 code, and some example Algol 68 programs in the same directory.
   http://www.csse.monash.edu.au/~lloyd/tildeProgLang/Algol68/

Computer Engineering by Gordon Bell et al.  
   A brief description of ALGOL 68 System implemented on Cm*.
   http://www.research.microsoft.com/users/GBell/Computer_Engineering/00000506.htm

Algol 68 Compiler  
   By Aristotelis Tsirigos; designed, implemented for compiler course at NYU, goal: compiler for a subset of Algol 68 that is able to bootstrap.
   http://homepages.nyu.edu/~at570/compiler.html

IFIP Working Group 2.1  
   The WG that developed the Algol languages.
   http://web.comlab.ox.ac.uk/oucl/work/jeremy.gibbons/wg21/

A Practical Guide to Algol 68  
   By Frank G. Pagan; John Wiley & Sons, 1976, ISBN 0471657476. [Amazon.com]
   http://www.amazon.com/exec/obidos/ASIN/0471657476

An Optimized Translation Process and Its Application to ALGOL 68  
   Paul Branquart, Jean-Pierre Cardinael, Johan Lewi, Jean-Paul Delescaille, Michael Van Begin; Springer-Verlag, 1976, ISBN 0387075453. [Amazon.com]
   http://www.amazon.com/exec/obidos/ASIN/0387075453

Marc's Programming Projects  
   Unfinished project to write Algol 68 compiler; source code provided in CWEBx.
   http://wwwmathlabo.univ-poitiers.fr/~maavl/myprojects.html

Index of /pub/dick/Algol68  
   Dick Grune's Algol 68 directory with test sets, transput, and a Snobol interpreter.
   http://www.cs.vu.nl/pub/dick/Algol68/

Historic Documents in Computer Science  
   Has scans of many Algol 68 documents including the RRE Algol 68R 'Green Book.'
   http://www.fh-jena.de/~kleine/history/history.html

Algol 68  
   EMX and Linux ports of A68ToC, the MC Revised ALGOL 68 Test Set, early version of OCCL compiler, other Algol 68 related items.
   http://www.nunan.fsnet.co.uk/algol68/

Services  
   LANIT-TERCOM have experience in Algol 68 and produce an Algol 68 compiler for MS-DOS
   http://www.tepkom.ru/eng/services/softdev.asp

ALGOL 68 with Fewer Tears  
   C.H. Lindsey; The Computer Journal, Volume 15, Issue 2, pp. 176-188. Abstract and text in TIFF format.
   http://www3.oup.co.uk/computer_journal/hdb/Volume_15/Issue_02/150176.sgm.abs.html

The Use of ALGOL 68 for Trees  
   By H.D. Baecker; The Computer Journal, Volume 13, Issue 1, pp. 25-27. Abstract and text in TIFF format.
   http://www3.oup.co.uk/computer_journal/hdb/Volume_13/Issue_01/130025.sgm.abs.html

An Experimental Testbed for Numerical Software, part 2: ALGOL 68  
   By M.A. Hennell, D, Hedley; The Computer Journal, Volume 22, Issue 1, pp. 53-56. Abstract and text in TIFF format.
   http://www3.oup.co.uk/jnls/list/computer_journal/hdb/Volume_22/Issue_01/220053.sgm.abs.html

Practical experience with ALGOL 68-RT  
   Abstract and text in TIFF form from The Computer Journal, Volume 22, Issue 2, pp. 114-118.
   http://www3.oup.co.uk/jnls/list/computer_journal/hdb/Volume_22/Issue_02/220114.sgm.abs.html

ALGOL 68 as a Metalanguage for Denotational Semantics  
   By Frank G. Pagan; The Computer Journal, Volume 22, Issue 1, pp. 63-66. Abstract and text in TIFF format.
   http://www3.oup.co.uk/jnls/list/computer_journal/hdb/Volume_22/Issue_01/220063.sgm.abs.html

Programming denotational semantics II  
   using Algol 68. Abstract and text in TIFF form from The Computer Journal, Volume 28, Issue 5, pp. 480-486.
   http://www3.oup.co.uk/jnls/list/computer_journal/hdb/Volume_28/Issue_05/280480.sgm.abs.html

A comparison of PASCAL and ALGOL 68  
   Abstract and text in TIFF form from The Computer Journal, Volume 21, Issue 4, pp. 316-323.
   http://www3.oup.co.uk/jnls/list/computer_journal/hdb/Volume_21/Issue_04/210316.sgm.abs.html

VanWijngaarden MR76.pdf  
   A. vanWijngaarden's MR76 paper on the orthogonal design of a language from 1965, which was the starting point of Algol 68. [PDF]
   http://www.fh-jena.de/~kleine/history/languages/VanWijngaarden-MR76.pdf

The Algol Bulletin  
   The historical IFIP WG2.1 series of Algol Bulletins and Algol Supplements scanned by Brian Wichmann
   http://www.softeng.ox.ac.uk/Jeremy.Gibbons/wg21/algol-bulletin/INDEX.HTM

99 Bottles of Beer on the Wall  
   Algol 68 version.
   http://www.99-bottles-of-beer.net/

ALGOL 68 slideshow  
   A short overview of the main features of Algol 68.
   http://www.cc.gatech.edu/classes/AY2004/cs6390_fall/slides/algol68_files/frame.htm

Home Page of W. B. Kloke  
   Has versions of Algol 68 Revised Report (in .dvi, .ps and .pdf formats) and numerous Algol 68 related links.
   http://vestein.arb-phys.uni-dortmund.de/~wb/

Revised Report on the Algorithmic Language ALGOL 68  
   A translation of the Report into HTML by W. B. Kloke.
   http://burks.bton.ac.uk/burks/language/other/a68rr/rrtoc.htm

On the Development of Algol  
   Thesis by R. Morrison describing an implementation of S-Algol. Abstract. Text in PDF format.
   http://www.dcs.st-and.ac.uk/research/publications/Mor79a.php

ALGOL 68 - 3rd generation ALGOL  
   Entry in an interactive historical roster of computer languages.
   http://hopl.murdoch.edu.au/showlanguage.prx?exp=311&language=ALGOL%2068

Algol68  
   A synopsis of the features of Algol 68.
   http://www.cap-lore.com/Software/Algol68.html