LisP+Family

[|Historically significant dialects] of Lisp from Wikipedia Historically significant dialects A Lisp machine in the [|MIT Museum]
 * LISP 1[|[][|9][|]] – First implementation.
 * LISP 1.5[|[][|10][|]] – First widely distributed version, developed by McCarthy and others at MIT. So named because it contained several improvements on the original "LISP 1" interpreter, but was not a major restructuring as the planned [|LISP 2] would be.
 * [|Stanford LISP] 1.6[|[][|11][|]] – This was a successor to LISP 1.5 developed at the [|Stanford AI Lab], and widely distributed to [|PDP-10] systems running the [|TOPS-10] operating system. It was rendered obsolete by Maclisp and InterLisp.
 * [|MACLISP][|[][|12][|]] – developed for MIT's [|Project MAC] (no relation to Apple's [|Macintosh], nor to [|McCarthy]), direct descendant of LISP 1.5. It ran on the PDP-10 and [|Multics] systems. (MACLISP would later come to be called Maclisp, and is often referred to as MacLisp.)
 * [|InterLisp][|[][|13][|]] – developed at [|BBN Technologies] for PDP-10 systems running the [|Tenex] operating system, later adopted as a "West coast" Lisp for the Xerox Lisp machines as [|InterLisp-D]. A small version called "InterLISP 65" was published for [|Atari]'s [|6502]-based computer line. For quite some time Maclisp and InterLisp were strong competitors.
 * [|Franz Lisp] – originally a [|Berkeley] project; later developed by Franz Inc. The name is a humorous deformation of the name "[|Franz Liszt]", and does not refer to [|Allegro Common Lisp], the dialect of Common Lisp sold by Franz Inc., in more recent years.
 * [|XLISP], which [|AutoLISP] was based on.
 * [|Standard Lisp] and [|Portable Standard Lisp] were widely used and ported, especially with the Computer Algebra System REDUCE.
 * [|ZetaLisp], also known as Lisp Machine Lisp – used on the [|Lisp machines], direct descendant of Maclisp. ZetaLisp had big influence on Common Lisp.
 * [|LeLisp] is a French Lisp dialect. One of the first Interface Builders was written in LeLisp.
 * [|Common Lisp] (1984), as described by //[|Common Lisp the Language]// – a consolidation of several divergent attempts (ZetaLisp, [|Spice Lisp], [|NIL], and [|S-1 Lisp]) to create successor dialects[|[][|14][|]] to Maclisp, with substantive influences from the Scheme dialect as well. This version of Common Lisp was available for wide-ranging platforms and was accepted by many as a [|de facto standard][|[][|15][|]] until the publication of ANSI Common Lisp (ANSI X3.226-1994).
 * [|Dylan] was in its first version a mix of Scheme with the Common Lisp Object System.
 * [|EuLisp] – attempt to develop a new efficient and cleaned-up Lisp.
 * [|ISLISP] – attempt to develop a new efficient and cleaned-up Lisp. Standardized as ISO/IEC 13816:1997[|[][|16][|]] and later revised as ISO/IEC 13816:2007:[|[][|17][|]] //Information technology – Programming languages, their environments and system software interfaces – Programming language ISLISP//.
 * IEEE [|Scheme] – IEEE standard, 1178–1990 (R1995)
 * ANSI [|Common Lisp] – an [|American National Standards Institute] (ANSI) [|standard] for Common Lisp, created by subcommittee [|X3J13], chartered[|[][|18][|]] to begin with //Common Lisp: The Language// as a base document and to work through a public [|consensus] process to find solutions to shared issues of [|portability] of programs and [|compatibility] of Common Lisp implementations. Although formally an ANSI standard, the implementation, sale, use, and influence of ANSI Common Lisp has been and continues to be seen worldwide.
 * [|ACL2] or "A Computational Logic for Applicative Common Lisp", an applicative (side-effect free) variant of Common LISP. ACL2 is both a programming language in which you can model computer systems and a tool to help proving properties of those models.