# LanguageTool

**A proof-reading tool for English, Spanish, German,
Polish, Chinese, French, Russian, Italian, Dutch
and [more languages](https://www.languagetool.org/languages/)**

Version 3.5, 2016-09-30  
Copyright (C) 2005-2016 the LanguageTool community and Daniel Naber (www.danielnaber.de)  
Homepage: https://www.languagetool.org


## Requirements

* Java 8 or later
* For LibreOffice/OpenOffice.org integration:
    * LibreOffice 3.5.4 (or later) or
    * Apache OpenOffice 3.4.1 (or later)


## Usage

### LibreOffice/OpenOffice

To integrate LanguageTool into LibreOffice or OpenOffice.org, you can use two methods:

1. Double-click `LanguageTool-3.5.oxt`. The extension should
   start installing. Follow the on-screen instructions.

2. If the above method doesn't work, call `Tools > Extension
   Manager > Add...` in LibreOffice/OpenOffice.org and browse for the
   `LanguageTool-3.5.oxt` file.

Close and restart LibreOffice/OpenOffice.org Writer. Remember to close
the QuickStarter as well if you use it. Type text with
an error, e.g. "Feel tree to do so." - make sure the text language
is set to English for this example.

You should see a blue underline under the word "tree" after about a second.
Opening the context menu with the right mouse button on that word
offers you a short description of the error and a correction ("free").

If you are using LibreOffice and you want to check English or Russian texts:
Use `Options -> Language Settings -> Writing Aids -> Edit...` in the
`Tools` menu to disable LightProof and enable LanguageTool for English.

Note that there will also be a new menu item "LanguageTool"
under the `Tools` menu.
If the native spelling and grammar dialog doesn't check grammar,
make sure that the check box `Check Grammar` is checked in it
(if the window closes because of no mistakes in the document,
simply make any spelling mistake to make it open for a longer
time, and check the box). Check also if LanguageTool is visible
under `Grammar` in `Tools > Options > Language Settings > Spelling`
for your language. Note: you can disable the grammar check without
uninstalling LanguageTool simply by clearing the check box next to
LanguageTool in the same dialog.
  
Please see https://www.languagetool.org/issues/ if you experience problems.

### Stand-alone version

To use the stand-alone version, double click on the `languagetool.jar` file
or call `java -jar languagetool.jar` from the command line.

### Command-line version

To check plain text files from the command line, use

    java -jar languagetool-commandline.jar -l xx <filename>

with `xx` being the code for your language, e.g. `en-US` for American English
or just `en` for English without spell checking activated.


## Source code history

On 2013-08-08 we moved our source code from Subversion at Sourceforge to
git at github (https://github.com/languagetool-org/languagetool). Most
history has been preserved. History in git is lost for:

* binary files
* branches and tags

If you need this history, the old subversion repository is still available
at http://svn.code.sf.net/p/languagetool/code/trunk/languagetool/.


## License
 
Unless otherwise noted, this software is distributed under
the LGPL, see file [COPYING.txt](https://github.com/languagetool-org/languagetool/blob/master/languagetool-standalone/COPYING.txt)

See [third-party-licenses/README.txt](https://github.com/languagetool-org/languagetool/blob/master/languagetool-standalone/src/main/resources/third-party-licenses/README.txt) for the copyright of the external libraries.

#### Frequency data

Some language's spelling dictionaries contain frequency data. This is taken
from the Mozilla-B2G Gaia project (https://github.com/mozilla-b2g/gaia/) which
again takes it from Spell On It (http://www.spellonit.com/downloads/frequencies/).
The frequency data is released under Creative Commons Attribution 4.0
International License (http://creativecommons.org/licenses/by/4.0/).

#### Asturian

The Asturian data for part-of-speech tagging are from the Freeling dictionary,
licensed under GNU General Public License.
Contributor(s): Xesús González Rato <esbardu@softastur.org>

#### Belarusian

Spellchecker dictionary is based on dict-be-official-2008-20140108.oxt from http://bnkorpus.info/download.html 
under Creative Commons Attribution/Share-Alike 3.0.

####  Breton

The Breton data for part-of-speech tagging is based on the Apertium Breton
dictionary under GNU General Public License with permission of its authors:

    Copyright (C) 2008--2010 Francis Tyers <ftyers@prompsit.com>
    Copyright (C) 2009--2010 Fulup Jakez <fulup.jakez@ofis-bzh.org>
    Copyright (C) 2009       Gwenvael Jekel <jequelg@yahoo.fr>
    Development supported by:
    * Prompsit Language Engineering, S. L.
    * Ofis ar Brezhoneg
    * Grup Transducens, Universitat d'Alacant

The Breton FSA spelling dictionary is based on the Breton Hunspell dictionary
"Difazier Hunspell an Drouizig" (0.13) licensed under the Lesser GNU Public
License (LGPL), available at:
http://extensions.libreoffice.org/extension-center/an-drouizig-breton-spellchecker/releases/0.13/difazier-an-drouizig-0_13.oxt

#### Catalan

The Catalan data for part-of-speech tagging were created by Jaume Ortolà
based on the Freeling 3.0 and Softcatalà 2.5.0 dictionaries, both released
under the GNU General Public License.
 
#### Chinese

The Chinese data and code for part-of-speech tagging is based on ictclas4j project
(http://code.google.com/p/ictclas4j/) under Apache License 2.0.

#### Danish

The Danish tagger is based upon data from Stavekontrolden - Danish dictionary
for Hunspell. © 2012 Foreningen for frit tilgængelige sprogværktøjer.
These files are published under the following open source licenses:
GNU GPL version 2.0, GNU LGPL version 2.1, Mozilla MPL version 1.1
http://www.stavekontrolden.dk
Stavekontrolden is based on data from Det Danske Sprog- og Litteraturselskab
(The Danish Society for Language and Literature), http://www.dsl.dk.

#### Dutch

The Dutch data are partly based on Alpino parser for Dutch by Gertjan van
Noord and is released on LGPL license. Alpino is available at
http://www.let.rug.nl/~vannoord/alp/Alpino/. The POS tag system and values
come mostly from OpenTaal, www.opentaal.org.
 
#### English

The English data for part-of-speech tagging are based on:

##### Automatically Generated Inflection Database (AGID) version 4

Automatically Generated Inflection Database (AGID) version 4,
Copyright 2000-2003 by Kevin Atkinson <kevina@gnu.org>
The part-of-speech database is taken from Alan Beale 2of12id
and the WordNet database which is under the following copyright:

    This software and database is being provided to you, the LICENSEE, by
    Princeton University under the following license.  By obtaining, using
    and/or copying this software and database, you agree that you have
    read, understood, and will comply with these terms and conditions.:

    Permission to use, copy, modify and distribute this software and
    database and its documentation for any purpose and without fee or
    royalty is hereby granted, provided that you agree to comply with
    the following copyright notice and statements, including the disclaimer,
    and that the same appear on ALL copies of the software, database and
    documentation, including modifications that you make for internal
    use or for distribution.

    WordNet 1.6 Copyright 1997 by Princeton University.  All rights reserved.

    THIS SOFTWARE AND DATABASE IS PROVIDED "AS IS" AND PRINCETON
    UNIVERSITY MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
    IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, PRINCETON
    UNIVERSITY MAKES NO REPRESENTATIONS OR WARRANTIES OF MERCHANT-
    ABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE
    OF THE LICENSED SOFTWARE, DATABASE OR DOCUMENTATION WILL NOT
    INFRINGE ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR
    OTHER RIGHTS.

    The name of Princeton University or Princeton may not be used in
    advertising or publicity pertaining to distribution of the software
    and/or database.  Title to copyright in this software, database and
    any associated documentation shall at all times remain with
    Princeton University and LICENSEE agrees to preserve same.

Alan Beale 2of12id.txt is indirectly derived from the Moby part-of-speech
database and the WordNet database.  The Moby part-of-speech is in the
public domain:

    The Moby lexicon project is complete and has
    been place into the public domain. Use, sell,
    rework, excerpt and use in any way on any platform.

    Placing this material on internal or public servers is
    also encouraged. The compiler is not aware of any
    export restrictions so freely distribute world-wide.

    You can verify the public domain status by contacting

    Grady Ward
    3449 Martha Ct.
    Arcata, CA  95521-4884

    grady@netcom.com
    grady@northcoast.com

    For more information on wordlists used, see agid-readme.txt.

##### Part Of Speech Database, compiled by Kevin Atkinson <kevina@users.sourceforge.net>

The part-of-speech.txt file contains is a combination of
"Moby (tm) Part-of-Speech II" and the WordNet database (see above and
[pos-readme.txt](https://github.com/languagetool-org/languagetool/blob/master/languagetool-language-modules/en/src/main/resources/org/languagetool/resource/en/pos-readme.txt)).

##### 2of12inf wordlist

Released to public domain, see `resource/en/12dicts-readme.html`.

##### Public domain Moby wordlists

Public domain Moby wordlists were used also for generating
POS tag information for common proper names.

For more information, see the scripts in the source directory
`languagetool-language-modules/en/src/main/resources/org/languagetool/resource/en/`.

#### French

The French data for part-of-speech tagging are from
the [Dicollecte](http://www.dicollecte.org/home.php?prj=fr) project.
They are made available here under the terms of the Mozilla Public
License 2.0 (http://mozilla.org/MPL/2.0/). See also detailed information
in [README_lexique.txt](https://github.com/languagetool-org/languagetool/blob/master/languagetool-language-modules/fr/src/main/resources/org/languagetool/resource/fr/README_lexique.txt).

#### Galician

The Galician data for part-of-speech tagging were created by Susana Sotelo
Docio based on Freeling and Apertium dictionaries. Both are licensed under GPL.
 
#### German

The German data for part-of-speech tagging is taken from Morphy
(http://www.wolfganglezius.de/doku.php?id=cl:morphy)
under Creative Commons Attribution-Share Alike 4.0.

#### Greek

The Greek dictionary only contains very few test entries for now,
added by Panagiotis Minos. They are made available here under LGPL.

#### Italian

The Italian data for part-of-speech tagging is taken from Morph-it!,
licensed under the Creative Commons Attribution ShareAlike 2.0 License
and the GNU Lesser General Public License (LGPL)
(see http://sslmitdev-online.sslmit.unibo.it/linguistics/morph-it.php).
 
#### Khmer

The dictionary was obtained from these four sources:
http://code.google.com/p/khmer-dictionary-tools/ - Part of Speech entries and words from

* Chuon Nath's dictionary released by the Buddhist Institute of Cambodia under a BSD License
  for the LanguageTool Project
* http://sealang.net/khmer/ - Part of Speech entries and words from Robert Headley's dictionary
  were released by Robert Headley under a BSD License for the LanguageTool Project
* http://www.panl10n.net/english/Outputs%20Phase%202/CCs/Cambodia/MoEYS/Software/2009/KhmerCorpus.zip
  Released under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
  for the LanguageTool Project
* http://www.sbbic.org - The Society for Better Books of Cambodia has made changes to all
  these sources, correcting, and adding new words in order to improve the grammar checker -
  SBBIC releases these changes and additions under a BSD License for the LanguageTool Project

#### Malayalam

The data has been collected by Jithesh.V.S. of the Centre For Development of Imaging Technology (C-DIT),
Thiruvananthapuram, Kerala, India (http://www.cdit.org). It comes from public sources like newspapers,
magazines, and novels. It is made available here under GPL.
 
#### Polish

The Polish data for part-of-speech tagging is from the Morfologik project,
licensed on BSD (see http://morfologik.blogspot.com).

#### Romanian

The Romanian data for part-of-speech tagging is developed by Ionuț Păduraru
(http://www.archeus.ro). It's being released here on LGPL license.

#### Russian

Russian dictionary originally developed by www.aot.ru and licensed under LGPL.
http://www.aot.ru/download.php file rus-src-morph.tar.gz
or http://sourceforge.net/p/seman/svn/HEAD/tree/trunk/Dicts/SrcMorph/RusSrc/ file morphs.mrd.
It was partially converted to fsa format in 2008-2011, 2014 by Yakov Reztsov.
Frequency information for spell-checking dictionary from www.aot.ru.
Source frequency information http://sourceforge.net/p/seman/svn/HEAD/tree/trunk/Dicts/SrcBinDict/ file WordData.txt.
It was converted to use with spell-checking dictionary in 2014 by Yakov Reztsov.

#### Slovak

The Slovak data were created by Zdenko Podobný based on Slovak National
Corpus data (http://korpus.juls.savba.sk/). They are released here on
LGPL license.

#### Spanish

The dictionary was mainly obtained from the Freeling project:

* http://devel.cpl.upc.edu/freeling/svn/latest/freeling/data/es/dicc.src
* http://garraf.epsevg.upc.es/freeling/

It is released under the GNU General Public License.

#### Swedish

The Swedish data are based on DSSO. The Initial Developer of the Original Code is Göran Andersson. Contributor(s):

* Tom Westerberg <tweg@welho.com>
* Niklas Johansson <sleeping.pillow@gmail.com>

The Swedish Dictionary may be used under the terms of the GNU Lesser General Public License
Version 2.1 or later (the "LGPL"). http://dsso.se
 
#### Tagalog

The Tagalog Tagset was designed by Nathaniel Oco.
The words for the Tagger Dictionary were taken from the Philippine Literature
Domain of Dalos D. Miguel's Comparative Analysis of Tagalog POS Taggers.
The Tagger Dictionary and the Tagset are made available under LGPL.
The Trigram Training Data is available at: The Trigram Training Data is available
at: https://sourceforge.net/projects/tattoi.u/files/Trigram%20Text/

#### Tamil

The Tamil dictionary, tagset and rules were created by
Ve. Elanjelian <tamiliam@gmail.com>. It is released under GPLv3 licence.

* The work owes much to his previous work with Hunspell spellchecker, a project
  that has had many contributors including S. Muguntharaj, Radhakrishnan, Vijay,
  A. Suji, Malathi Selvaraj, Sri Ramadoss, Yagna Kalyanaraman, and Pranava Swaroop.
* The work also made use the Tamil corpus created by Crubadan 2.0
  <http://borel.slu.edu/crubadan/stadas.html> for shortlisting nouns and verbs.
  The corpus data is released under GPLv3, as well.
* The grammatical rules themselves are based on "thamizhnadaik kaiyEdu" (2004)
 and "thamizhil nAmum thavaRillAmal ezhuthalAm" (2007)
 
#### Ukrainian

The Ukrainian data for part-of-speech tagging were created by Andriy Rysin
It's based on spell-uk (http://sourceforge.net/projects/ispell-uk/) which is licensed under GPL/LGPL.
