SWI-Prolog

SWI-Prolog - free implementation of the programming language Prolog, commonly used for teaching and semantic web applications. This programming language is the 342^nd most popular in the global Wikipedia ranking of programming languages and the 213^th most popular programming language in Italian Wikipedia. Article “SWI-Prolog” in Italian Wikipedia has 3.1 points for quality (as of July 1, 2026). The article contains 0 references and 3 sections.

This article has the best quality in Russian Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “SWI-Prolog”, its content was written by 17 registered users of Italian Wikipedia and edited by 117 registered Wikipedia users in all languages.

SWI-Prolog is on the 213^th place in local ranking of programming languages in Italian Wikipedia and on the 342^nd place in global ranking of programming languages in all the time.

The article is cited 4 times in Italian Wikipedia and cited 46 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Italian): #31150 in July 2019
• Global: #183258 in April 2014

The highest popularity rank from 2008:

• Local (Italian): #226121 in May 2009
• Global: #495827 in April 2009

There are 8 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Russian (ru) SWI-Prolog		26.8281
2	English (en) SWI-Prolog		25.0817
3	Ukrainian (uk) SWI-Prolog		21.6213
4	Dutch (nl) SWI-Prolog		14.6423
5	Vietnamese (vi) SWI-Prolog		8.0625
6	Italian (it) SWI-Prolog		3.1376
7	Portuguese (pt) SWI-Prolog		1.5864
8	Spanish (es) SWI-Prolog		1.2257

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The following table shows the most popular language versions of the article.

The most popular language versions of the article "SWI-Prolog" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) SWI-Prolog		267 376
2	Russian (ru) SWI-Prolog		48 390
3	Spanish (es) SWI-Prolog		43 910
4	Portuguese (pt) SWI-Prolog		16 311
5	Italian (it) SWI-Prolog		10 826
6	Dutch (nl) SWI-Prolog		8 500
7	Ukrainian (uk) SWI-Prolog		3 774
8	Vietnamese (vi) SWI-Prolog		3 247

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "SWI-Prolog" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) SWI-Prolog		471
2	Russian (ru) SWI-Prolog		111
3	Spanish (es) SWI-Prolog		29
4	Italian (it) SWI-Prolog		19
5	Portuguese (pt) SWI-Prolog		7
6	Ukrainian (uk) SWI-Prolog		5
7	Dutch (nl) SWI-Prolog		4
8	Vietnamese (vi) SWI-Prolog		0

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "SWI-Prolog" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) SWI-Prolog		61
2	Italian (it) SWI-Prolog		17
3	Russian (ru) SWI-Prolog		13
4	Dutch (nl) SWI-Prolog		12
5	Portuguese (pt) SWI-Prolog		6
6	Vietnamese (vi) SWI-Prolog		4
7	Ukrainian (uk) SWI-Prolog		3
8	Spanish (es) SWI-Prolog		1

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The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "SWI-Prolog" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	English (en) SWI-Prolog		0
2	Spanish (es) SWI-Prolog		0
3	Italian (it) SWI-Prolog		0
4	Dutch (nl) SWI-Prolog		0
5	Portuguese (pt) SWI-Prolog		0
6	Russian (ru) SWI-Prolog		0
7	Ukrainian (uk) SWI-Prolog		0
8	Vietnamese (vi) SWI-Prolog		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "SWI-Prolog" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) SWI-Prolog		25
2	Dutch (nl) SWI-Prolog		5
3	Spanish (es) SWI-Prolog		4
4	Italian (it) SWI-Prolog		4
5	Portuguese (pt) SWI-Prolog		4
6	Russian (ru) SWI-Prolog		2
7	Ukrainian (uk) SWI-Prolog		1
8	Vietnamese (vi) SWI-Prolog		1

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#	Language	Value
en	English SWI-Prolog
es	Spanish SWI-Prolog
it	Italian SWI-Prolog
nl	Dutch SWI-Prolog
pt	Portuguese SWI-Prolog
ru	Russian SWI-Prolog
uk	Ukrainian SWI-Prolog
vi	Vietnamese SWI-Prolog

Best Rank

Italian: #226121 05.2009

Global: #495827 04.2009

Best Rank

Italian: #31150 07.2019

Global: #183258 04.2014

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information