Editing ALGOL 68 (section)

====Others====
The first full implementation of the language was introduced in 1974 by CDC Netherlands for the [[Control Data]] mainframe series. This saw limited use, mostly teaching in Germany and the Netherlands.<ref name="shorter"/>

A version similar to 68-R was introduced from [[Carnegie Mellon University]] in 1976 as 68S, and was again a one-pass compiler based on various simplifications of the original and intended for use on smaller machines like the [[DEC PDP-11]]. It too was used mostly for teaching purposes.<ref name="shorter"/>

A version for [[IBM]] mainframes did not become available until 1978, when one was released from [[Cambridge University]]. This was "nearly complete". Lindsey released a version for small machines including the [[IBM PC]] in 1984.<ref name="shorter"/>

Three open source Algol 68 implementations are known:<ref>{{cite web |last1=van der Veer |first1=Marcel |title=Open source Algol 68 implementations |url=http://algol68.sourceforge.net/ |website=algol68.sourceforge.net}}</ref>
* '''a68g''', [[GPLv3]], written by Marcel van der Veer.
* '''algol68toc''', an [[open-source software]] port of [[ALGOL 68RS]].
* experimental Algol68 frontend for [[GNU Compiler Collection|GCC]],  written by Jose E. Marchesi.<ref name=":0">{{cite web |last1=E. Marchesi |first1=Jose |title= Algol 68 Front-End |url=https://gcc.gnu.org/wiki/Algol68FrontEnd |website=gcc.gnu.org}}</ref><ref name=":1">{{cite web |last1=E. Marchesi |first1=Jose |title= An Algol 68 front end for GCC |url=https://lwn.net/Articles/1003916/ |website=lwn.net}}</ref>