Flex (lexical analyzer generator)

Flex - free software alternative to lex. Article “Flex (lexical analyzer generator)” in English Wikipedia has 38.3 points for quality (as of July 1, 2026). The article contains 16 references and 14 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

Since the creation of article “Flex (lexical analyzer generator)”, its content was written by 106 registered users of English Wikipedia and edited by 247 registered Wikipedia users in all languages.

The article is cited 26 times in English Wikipedia and cited 98 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #44936 in January 2006
• Global: #25201 in November 2002

The highest popularity rank from 2008:

• Local (English): #153735 in March 2008
• Global: #150922 in May 2011

There are 12 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	English (en) Flex (lexical analyzer generator)		38.3089
2	Russian (ru) Flex (генератор лексических анализаторов)		24.9202
3	Norwegian (no) Flex (programvare)		24.6641
4	Ukrainian (uk) Flex (лексичний аналізатор)		21.8863
5	French (fr) Flex (logiciel)		11.6856
6	Korean (ko) Flex (어휘분석기)		9.9558
7	Czech (cs) Flex lexical analyser		8.432
8	Italian (it) Flex (software)		5.4277
9	Chinese (zh) Flex詞法分析器		3.6708
10	Serbian (sr) Флекс		3.0554

More...

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

The most popular language versions of the article "Flex (lexical analyzer generator)" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Flex (lexical analyzer generator)		647 484
2	Russian (ru) Flex (генератор лексических анализаторов)		73 319
3	French (fr) Flex (logiciel)		63 485
4	Korean (ko) Flex (어휘분석기)		19 920
5	Polish (pl) Flex (program)		18 207
6	Chinese (zh) Flex詞法分析器		15 952
7	Serbian (sr) Флекс		10 448
8	Italian (it) Flex (software)		9 068
9	Czech (cs) Flex lexical analyser		8 902
10	Ukrainian (uk) Flex (лексичний аналізатор)		7 090

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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 "Flex (lexical analyzer generator)" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Flex (lexical analyzer generator)		861
2	French (fr) Flex (logiciel)		91
3	Russian (ru) Flex (генератор лексических анализаторов)		65
4	Chinese (zh) Flex詞法分析器		55
5	Polish (pl) Flex (program)		20
6	Italian (it) Flex (software)		19
7	Persian (fa) تحلیل‌گر واژگانی فلکس		16
8	Korean (ko) Flex (어휘분석기)		15
9	Serbian (sr) Флекс		15
10	Czech (cs) Flex lexical analyser		10

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

Language versions of the article "Flex (lexical analyzer generator)" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Flex (lexical analyzer generator)		106
2	French (fr) Flex (logiciel)		42
3	Czech (cs) Flex lexical analyser		18
4	Polish (pl) Flex (program)		18
5	Russian (ru) Flex (генератор лексических анализаторов)		18
6	Italian (it) Flex (software)		14
7	Serbian (sr) Флекс		11
8	Ukrainian (uk) Flex (лексичний аналізатор)		6
9	Persian (fa) تحلیل‌گر واژگانی فلکس		4
10	Korean (ko) Flex (어휘분석기)		4

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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 "Flex (lexical analyzer generator)" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Czech (cs) Flex lexical analyser		0
2	English (en) Flex (lexical analyzer generator)		0
3	Persian (fa) تحلیل‌گر واژگانی فلکس		0
4	French (fr) Flex (logiciel)		0
5	Italian (it) Flex (software)		0
6	Korean (ko) Flex (어휘분석기)		0
7	Norwegian (no) Flex (programvare)		0
8	Polish (pl) Flex (program)		0
9	Russian (ru) Flex (генератор лексических анализаторов)		0
10	Serbian (sr) Флекс		0

More...

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

Language versions of the article "Flex (lexical analyzer generator)" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Flex (lexical analyzer generator)		26
2	French (fr) Flex (logiciel)		14
3	Russian (ru) Flex (генератор лексических анализаторов)		10
4	Korean (ko) Flex (어휘분석기)		8
5	Polish (pl) Flex (program)		7
6	Chinese (zh) Flex詞法分析器		7
7	Czech (cs) Flex lexical analyser		6
8	Persian (fa) تحلیل‌گر واژگانی فلکس		6
9	Ukrainian (uk) Flex (лексичний аналізатор)		5
10	Serbian (sr) Флекс		4

More...

#	Language	Value
cs	Czech Flex lexical analyser
en	English Flex (lexical analyzer generator)
fa	Persian تحلیل‌گر واژگانی فلکس
fr	French Flex (logiciel)
it	Italian Flex (software)
ko	Korean Flex (어휘분석기)
no	Norwegian Flex (programvare)
pl	Polish Flex (program)
ru	Russian Flex (генератор лексических анализаторов)
sr	Serbian Флекс
uk	Ukrainian Flex (лексичний аналізатор)
zh	Chinese Flex詞法分析器

Best Rank

English: #153735 03.2008

Global: #150922 05.2011

Best Rank

English: #44936 01.2006

Global: #25201 11.2002

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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