ParadigmsMulti-paradigm: functional, procedural, object-oriented, reflective, meta
Designed byMany
Implementation languageC, C#, Go, Java, JavaScript, Lisp
PlatformIA-32, x86-64
OSWindows, macOS, Linux, BSD, AIX, Solaris, Android, QNX
dayLISP, Easy-ISLisp, Iris, Isle ISLISP, ISLisproid, Kiss, OKI ISLISP, OpenLisp, PRIME-LISP
Influenced by
Common Lisp, EuLisp, Le Lisp, Scheme

ISLISP (also capitalized as ISLisp) is a programming language in the Lisp family standardized by the International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC) joint working group ISO/IEC JTC 1/SC 22/WG 16[1] (commonly termed simply SC22/WG16 or WG16). The primary output of this working group was an international standard, published by ISO.[2] The standard was updated in 2007 and republished as ISO/IEC 13816:2007(E).[3][4] Although official publication was through ISO, versions of the ISLISP language specification are available that are believed to be in the public domain.[5]

The goal of this standards effort was to define a small, core language to help bridge the gap between differing dialects of Lisp. It attempted to accomplish this goal by studying primarily Common Lisp, EuLisp, Le Lisp, and Scheme and standardizing only those features shared between them.

1958 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020
 LISP 1, 1.5, LISP 2(abandoned)
 Lisp Machine Lisp
 Scheme  R5RS  R6RS  R7RS small
 ZIL (Zork Implementation Language)
 Franz Lisp
 Common Lisp  ANSI standard
 Le Lisp
 MIT Scheme
 Chez Scheme
 Emacs Lisp
 PLT Scheme  Racket
 GNU Guile
 Visual LISP

Design goals

ISLISP has these design goals:[6]

ISLISP has separate function and variable namespaces (hence it is a Lisp-2).

ISLISP's object system, ILOS, is mostly a subset of the Common Lisp Object System (CLOS).

Major differences from Common Lisp


ISLISP implementations have been made for many operating systems including: Windows, most Unix and POSIX based (Linux, macOS, FreeBSD, OpenBSD, NetBSD, Solaris, HP-UX, AIX, Cygwin, QNX), Android, DOS, OS/2, Pocket PC, OpenVMS, and z/OS.

Implementations for hardware computer architectures include: x86, x86-64, IA-64, SPARC, SPARC9, PowerPC, MIPS, Alpha, PA-RISC, ARM, AArch64

ISLISP implementations
Name Creator Complete ISLisp Architecture Written in Operating system License Source code available
OpenLisp Eligis[7] Yes interpreter, compiles to C C, Lisp Windows, macOS, Linux, BSD, AIX, Solaris, QNX Proprietary Partial
OKI ISLISP[8] Kyoto University and Oki Electric Industry Co. Yes Bytecode machine, compiles to bytecode C Windows ? No
Prime-Lisp[9] Mikhail Semenov Yes Interpreter C# Windows Proprietary, Shareware, freely redistributable binaries No
Iris[10] Masaya Taniguchi[11] No Interpreter Go any Free, Mozilla Public License 2.0 Yes[12]
Iris web REPL[13] Masaya Taniguchi[14] No Interpreter, compiles to JavaScript Go, JavaScript Browser Free, Mozilla Public License 2.0 Yes[15]
Kiss[16] Yuji Minejima[17] No, not yet Interpreter C, Lisp any Free, GPL v3+ Yes[18]
ISLisproid[19] Hiroshi Gomi No Interpreter Java Android Proprietary No
dayLISP[20] Matthew Denson No Interpreter Java, Lisp Any Free, BSD Yes[21]
Easy-ISLisp[22] Kenichi Sasagawa Yes Interpreter, compiles to C C, Lisp Linux, MacOS, OpenBSD Free, BSD Yes[23]
Isle ISLISP KIM Taegyoon No Compiler Common Lisp OSes on which Common Lisp operates (including Linux and Windows) Free, Unlicense Yes[24]

Two older implementations are no longer available:


  1. ^ "WG16 Mail archive".[permanent dead link]
  2. ^ "ISO/IEC 13816:1997(E)". International Organization for Standardization. Retrieved 2018-11-10.
  3. ^ "ISO/IEC 13816:2007(E)". International Organization for Standardization. Retrieved 2018-11-10.
  4. ^ "Programming Language ISLISP: History".
  5. ^ "Programming Language ISLISP: Specification". Archived from the original on 2016-01-22. Retrieved 2011-03-20.
  6. ^ "".
  7. ^ "Eligis".
  8. ^ "OKI ISLISP".
  9. ^ "Prime-Lisp".
  10. ^ "Iris".
  11. ^ "Masaya Taniguchi". GitHub. Archived from the original on November 21, 2021.
  12. ^ "Iris source code". GitHub. 4 September 2021.
  13. ^ "Iris web REPL".
  14. ^ "Masaya Taniguchi". GitHub. Archived from the original on November 21, 2021.
  15. ^ "Iris source code". GitHub.
  16. ^ "Kiss". 8 April 2017.
  17. ^ "Yuji Minejima".
  18. ^ "Kiss source code". GitHub. 26 September 2021.
  19. ^ "ISLisproid".
  20. ^ "dayLISP".
  21. ^ "dayLISP source code".
  22. ^ "Easy-ISLisp".
  23. ^ "Easy-ISLisp source code". GitHub. 21 November 2021.
  24. ^ "Isle ISLISP source code". GitHub. 15 October 2023.