SWI-Prolog

free implementation of the programming language Prolog, commonly used for teaching and semantic web applications
Thing constraint_logic_programming_language Q2665141
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SWI-Prolog

Summary

SWI-Prolog is a constraint logic programming language[1]. SWI-Prolog draws 52 Wikipedia views per month (constraint_logic_programming_language category, ranking #1 of 4).[2]

Key Facts

  • SWI-Prolog's instance of is recorded as constraint logic programming language[3].
  • SWI-Prolog's instance of is recorded as compiler[4].
  • SWI-Prolog's instance of is recorded as interpreter[5].
  • SWI-Prolog's instance of is recorded as text editor[6].
  • SWI-Prolog's instance of is recorded as free software[7].
  • SWI-Prolog's maintained by is recorded as Jan Wielemaker[8].
  • SWI-Prolog's developer is recorded as Jan Wielemaker[9].
  • SWI-Prolog's copyright license is recorded as 2-clause BSD License[10].
  • SWI-Prolog's copyright license is recorded as GNU General Public License, version 2.0[11].
  • SWI-Prolog's copyright license is recorded as 1-clause BSD License[12].
  • SWI-Prolog's copyright license is recorded as public domain[13].
  • SWI-Prolog's copyright license is recorded as LaTeX Project Public License[14].
  • SWI-Prolog's copyright license is recorded as GNU General Public License, version 1.0 or later[15].
  • SWI-Prolog's copyright license is recorded as 3-clause BSD License[16].
  • SWI-Prolog's copyright license is recorded as zlib License[17].
  • SWI-Prolog's copyright license is recorded as Beerware[18].
  • SWI-Prolog's copyright license is recorded as GNU General Public License, version 2.0 or later[19].
  • SWI-Prolog's copyright license is recorded as Expat license[20].
  • SWI-Prolog's copyright license is recorded as Unicode, Inc. License Agreement[21].
  • SWI-Prolog's copyright license is recorded as Spencer License 86[22].
  • SWI-Prolog's copyright license is recorded as GNU Lesser General Public License, version 2.1 or later[23].
  • SWI-Prolog's copyright license is recorded as GNU General Public License, version 2.0 or later[24].
  • SWI-Prolog's programmed in is recorded as Q15777[25].
  • SWI-Prolog's subclass of is recorded as Emacs[26].
  • SWI-Prolog's operating system is recorded as Q3251801[27].

Why It Matters

SWI-Prolog draws 52 Wikipedia views per month (constraint_logic_programming_language category, ranking #1 of 4).[2] SWI-Prolog has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[28]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . Free Software Directory. Retrieved . wikidata.org.
  6. [8] . Free Software Directory. Retrieved . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . Free Software Directory. Retrieved . github.com. Provenance: wikidata.org.
  9. [11] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  10. [12] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  11. [13] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  12. [14] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  13. [15] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  14. [16] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  15. [17] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  16. [18] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  17. [19] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  18. [20] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  19. [21] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  20. [22] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  21. [23] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  22. [24] . salsa.debian.org. Retrieved . salsa.debian.org. Provenance: wikidata.org.
  23. [25] . Open Hub. Retrieved . openhub.net. Provenance: wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . Free Software Directory. Retrieved . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). SWI-Prolog. Retrieved May 3, 2026, from https://4ort.xyz/entity/swi-prolog
MLA “SWI-Prolog.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/swi-prolog.
BibTeX @misc{4ortxyz_swi-prolog_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{SWI-Prolog}}, year = {2026}, url = {https://4ort.xyz/entity/swi-prolog}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): SWI-Prolog — https://4ort.xyz/entity/swi-prolog (retrieved 2026-05-03)

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