LanguageTool
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 LanguageTool WikiCheck | |
| Developer(s) | Daniel Naber and Marcin Miłkowski |
|---|---|
| Initial release | 15 August 2005 |
| Stable release | 6.6[1]  / 27 March 2025 |
| Repository | |
| Written in | Java |
| Platform | Java SE |
| Size | |
| Type | Grammar checker |
| License | GNU LGPL v2.1+ |
| Website | languagetool |
LanguageTool is a free and open-source grammar, style, and spell checker, and all its features are available for download.[4][5] The LanguageTool website connects to a proprietary sister project called LanguageTool Premium (formerly LanguageTool Plus), which provides improved error detection for English and German, as well as easier revision of longer texts, following the open-core model.
Overview
[edit]LanguageTool was started by Daniel Naber for his diploma thesis[6] in 2003 (then written in Python). It now supports 31 languages, each developed by volunteer maintainers, usually native speakers of each language.[7] Based on error detection patterns, rules are created and then tested for a given text. The core app itself is free and open-source and can be downloaded for offline use. Some languages use 'n-gram' data,[8] which is massive and requires considerable processing power and I/O speed, for some extra detections. As such, LanguageTool is also offered as a web service that does the processing of 'n-grams' data on the server-side. LanguageTool "Premium" also uses n-grams as part of its freemium business model.
LanguageTool web service can be used via a web interface in a web browser, or via a specialized client-side plug-ins for Microsoft Office, LibreOffice, TeXstudio, Apache OpenOffice, Vim, Emacs, Firefox, Thunderbird, and Google Chrome.[5]
LanguageTool does not check a sentence for grammatical correctness, but whether it contains typical errors. Therefore, it is easy to invent ungrammatical sentences that LanguageTool will still accept. Error detection succeeds with a variety of rules based on XML or written in Java.[9] XML-based rules can be created using an online form.[10]
More recent developments rely on large n-gram libraries that offer suggestions for improving misspellings with the help of artificial neural networks.[11]
In April 2023 Learneo acquired LanguageTool.[12][13][14][15]
See also
[edit]
References
[edit]- ^ "Release 6.6". 27 March 2025. Retrieved 27 March 2025.
- ^ "Index of /download/". languagetool.org.
- ^ "Index of /download/ngram-data/". languagetool.org.
- ^ "LanguageTool - Spell and Grammar Checker". LanguageTool.
- ^ a b Ashwin (2019-07-08). "LanguageTool is a free, open-source, grammar and spell checker - gHacks Tech News". gHacks Technology News. Retrieved 2025-04-23.
- ^ Daniel Naber. "A Rule-Based Style and Grammar Checker" (PDF). Daniel Naber.de. Retrieved 30 June 2018.
- ^ "Supported languages". 28 December 2016. Retrieved 29 December 2016.
- ^ "N-Gram Data Download Page". languagetool.org. 2019-03-30. Retrieved 2019-03-30.
- ^ "Linux Administration", Pro Oracle Database 10g RAC on Linux, Berkeley, CA: Apress, pp. 385–400, 2006, doi:10.1007/978-1-4302-0214-1_15, ISBN 978-1-59059-524-4, retrieved 2022-02-23
- ^ "Create a new LanguageTool rule". community.languagetool.org. Retrieved 2023-10-26.
- ^ SKILL 2018 : Fachwissenschaftlicher Informatik-Kongress, Studierendenkonferenz Informatik, 26.-27. September 2018, Berlin. Gesellschaft für Informatik. [Bonn]. 2018. ISBN 978-3-88579-448-6. OCLC 1066024545.
{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link) - ^ Naber, Daniel. "LanguageTool joins Learneo".
- ^ "Learneo | Updates | Learneo, Inc. Accelerates AI Writing Innovation with LanguageTool Acquisition". www.learneo.com. Retrieved 2025-04-10.
- ^ Pathak, Shalini (2023-04-10). "US-Based Learneo Acquires Multilingual Writing Assistant LanguageTool – EdTechReview". Retrieved 2025-04-23.
- ^ Alston, Fiona (2023-04-05). "Learneo adds LanguageTool to its stable of AI-powered writing tools and services, in its latest acquisition". Tech.eu. Retrieved 2025-04-23.
External links
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