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<HEAD> <head>
<TITLE>GF - Grammatical Framework</TITLE> <meta charset="utf-8">
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<link rel="stylesheet" href="css/newstyle.css" title="GF"> <title>GF - Grammatical Framework</title>
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<img class="gflogo" src="doc/Logos/gf1.svg" alt=""> </head>
<H1>Grammatical Framework</H1>
<small class=tagline>A programming language for multilingual grammar applications</small> <body>
<div class="container">
<div class="m-5 text-center">
<img style="height:300px" src="doc/Logos/gf1.svg" alt="GF Logo">
<h1 class="display-3" style="text-shadow: 1px 1px 5px #999;">Grammatical Framework</h1>
<h4 class="text-black-50">A programming language for multilingual grammar applications</h4>
</div> </div>
<div class=menu> <div class="row">
<div class=links> <div class="col-sm-3">
<h4>Use GF</h4> <h2>Use</h2>
<ul> <ul>
<li><a href="http://cloud.grammaticalframework.org/">GF Cloud<img class=right src="src/www/P/gf-cloud.png" alt="GF Cloud Service" title="GF Cloud Service"></a> <li><a href="http://cloud.grammaticalframework.org/">GF Cloud</a>
<li><A HREF="demos/index.html">Other Demos</A> <li><a href="demos/index.html">Other Demos</a>
</ul>
<ul>
<li><A HREF="http://www.grammaticalframework.org/download/index.html"><b>Download GF</b></A>
<li><a href="doc/gf-editor-modes.html">GF Editor Modes</a>
</ul> </ul>
<a href="http://www.grammaticalframework.org/download/index.html" class="btn btn-primary mb-3 ">
<i class="fas fa-download mr-1"></i>
Download GF
</a>
<h4>Community</h4>
<ul> <ul>
<li><A HREF="http://groups.google.com/group/gf-dev">User Group</A> <li><a href="http://groups.google.com/group/gf-dev">User Group</a>
<li><a href="https://github.com/GrammaticalFramework/gf-core/issues">Bug Reports</a> <li><a href="https://github.com/GrammaticalFramework/gf-core/issues">Bug Reports</a>
(<a href="http://code.google.com/p/grammatical-framework/issues/list">old</a>) (<a href="http://code.google.com/p/grammatical-framework/issues/list">old</a>)
</ul> </ul>
</div> </div>
<div class=links> <div class="col-sm-4">
<h4>Learn GF</h4> <h2>Learn</h2>
<ul> <ul>
<li><a href="https://www.youtube.com/watch?v=x1LFbDQhbso">Google Tech Talk</a> <li><a href="doc/gf-shell-reference.html">GF Shell Reference</a>
<li><A HREF="doc/gf-quickstart.html">QuickStart</A> <li><a href="lib/doc/synopsis.html">RGL Library Synopsis</a>
<li><A HREF="doc/gf-reference.html">QuickRefCard</A> <li><a href="gf-book">The GF Book</a>
<li><A HREF="doc/gf-shell-reference.html">GF Shell Reference</A> <li><a href="doc/tutorial/gf-tutorial.html">GF Tutorial</a>
<li><a href="http://school.grammaticalframework.org/"><b>GF Summer School</b></a> <li><a href="doc/gf-refman.html">Reference Manual</a>
</ul> <li><a href="doc/gf-quickstart.html">QuickStart</a>
<ul> <li><a href="doc/gf-reference.html">QuickRefCard</a>
<li><A HREF="gf-book">The GF Book</A>
<li><A HREF="doc/tutorial/gf-tutorial.html">GF Tutorial</A>
<li><A HREF="doc/gf-refman.html">Reference Manual</A>
<li><A HREF="http://www.molto-project.eu/sites/default/files/MOLTO_D2.3.pdf">Best Practices</A> <small>[PDF]</small>
</ul>
<ul>
<li><A HREF="lib/doc/synopsis.html">Library Synopsis</A>
<li><A HREF="doc/gf-lrec-2010.pdf">Library Tutorial</A> <small>[PDF]</small>
<li><A HREF="http://www.postcrashgames.com/gf_world/">Coverage Map</A>
</ul> </ul>
<h4>Other resources</h4>
<ul>
<li><a href="https://www.youtube.com/watch?v=x1LFbDQhbso">Google Tech Talk</a>
<li><a href="http://www.molto-project.eu/sites/default/files/MOLTO_D2.3.pdf">Best Practices</a> <small>[PDF]</small>
<li><a href="doc/gf-lrec-2010.pdf">Library Tutorial</a> <small>[PDF]</small>
</ul>
</div> </div>
<div class=links> <div class="col-sm-4">
<h4>Develop GF</h4> <h2>Develop</h2>
<h4>GF</h4>
<ul> <ul>
<li><a href="doc/gf-developers.html">GF Developers Guide</a> <li><a href="doc/gf-developers.html">GF Developers Guide</a>
<li><A HREF="https://github.com/GrammaticalFramework/">GF on GitHub</A> <li><a href="https://github.com/GrammaticalFramework/">GF on GitHub</a>
<li><a href="/~hallgren/gf-experiment/browse/">Browse Source Code</a> <li><a href="/~hallgren/gf-experiment/browse/">Browse Source Code</a>
<li><A HREF="doc/gf-people.html">Authors</A> <li><a href="doc/gf-people.html">Authors</a>
</ul> </ul>
<h4>Develop Applications</h4> <h4>Applications</h4>
<ul> <ul>
<li><a href="http://hackage.haskell.org/package/gf-3.9/docs/PGF.html">PGF library API (Old Runtime)</a> <li><a href="http://hackage.haskell.org/package/gf-3.9/docs/PGF.html">PGF library API (Haskell runtime)</a>
<li><a href="doc/runtime-api.html">PGF library API (New Runtime)</a> <li><a href="doc/runtime-api.html">PGF library API (C runtime)</a>
<li><a href="src/ui/android/README">GF on Android (new)</a> <!-- <li><a href="src/ui/android/README">GF on Android (new)</a>
<li><A HREF="/android/">GF on Android (old) </A> <li><a href="/android/">GF on Android (old) </a> -->
<li><a href="doc/gf-editor-modes.html">GF Editor Modes</a>
</ul> </ul>
</div> </div>
<div class=links> </div>
<!-- <div class=links>
<h4>Related to GF</h4> <h4>Related to GF</h4>
<ul> <ul>
<li><A HREF="doc/gf-bibliography.html">Publications</A> <li><a href="http://school.grammaticalframework.org/"><strong>GF Summer School</strong></a>
<li><A HREF="http://remu.grammaticalframework.org/">The REMU Project</A> <li><a href="http://www.postcrashgames.com/gf_world/">Coverage Map</a>
<li><A HREF="http://www.molto-project.eu">The MOLTO Project</A> <li><a href="doc/gf-bibliography.html">Publications</a>
<li><a href="http://remu.grammaticalframework.org/">The REMU Project</a>
<li><a href="http://www.molto-project.eu">The MOLTO Project</a>
<li><a href="http://en.wikipedia.org/wiki/Grammatical_Framework">GF on Wikipedia</a> <li><a href="http://en.wikipedia.org/wiki/Grammatical_Framework">GF on Wikipedia</a>
<li><p><a href="Http://www.digitalgrammars.com/">Digital Grammars AB</a> <li><p><a href="Http://www.digitalgrammars.com/">Digital Grammars AB</a>
</ul> </ul>
</div> </div> -->
</div>
<h2>What is GF?</h2>
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<H2 class=noclear>News</H2>
<div class=news2>
<table class=news>
<tr><td>2018-07-25:<td>The GF repository has been split in two:
<a href="https://github.com/GrammaticalFramework/gf-core">gf-core</a> and
<a href="https://github.com/GrammaticalFramework/gf-rgl">gf-rgl</a>.
The original <a href="https://github.com/GrammaticalFramework/GF">GF</a> repository is now archived.
<tr><td>2017-08-11:<td><strong>GF 3.9 released!</strong>
<a href="download/release-3.9.html">Release notes</a>.
<tr><td>2017-06-29:<td>GF is moving to <a href="https://github.com/GrammaticalFramework/GF/">GitHub</a>!
<tr><td>2017-03-13:<td><strong>GF Summer School in Riga (Latvia), 14-25 August 2017</strong>
<a href="http://school.grammaticalframework.org/2017/">Summer
School web page</a>.
<tr><td>2016-09-07:<td><strong>Google Tech Talk on GF</strong> <a
href="https://www.youtube.com/watch?v=x1LFbDQhbso">on Youtube</a>.
<tr><td>2016-07-05:<td>GitHub mirror temporarily not updated, due to server migration.
<tr><td>2016-06-22:<td><strong>GF 3.8 released!</strong>
<a href="download/release-3.8.html">Release notes</a>.
<tr><td>2015-06-21:<td><strong>Summer School in Rule-Based Machine
Translation in Alacant/Alicante (Spain), 11-21 July 2016</strong>
featuring GF, Apertium, Matxin, and TectoMT.
<a href="http://xixona.dlsi.ua.es/rbmt-summer-school/2016/">Summer
School web page</a>.
<tr><td>2016-06-14:<td>New resource grammar language: Nynorsk.
<tr><td>2015-10-02:<td><strong>GF 3.7.1 released!</strong>
<a href="download/release-3.7.1.html">Release notes</a>.
<tr><td>2015-06-25:<td><strong>GF 3.7 released!</strong>
<a href="download/release-3.7.html">Release notes</a>.
<tr><td>2015-03-13:<td>New resource grammar language: Mongolian.
See <a href="lib/doc/synopsis.html">library synopsis</a>.
<tr><td>2015-02-09:<td><strong>GF Summer School in Gozo (Malta), 13-24 July 2015</strong>
<a href="http://school.grammaticalframework.org/2015/">Summer
School web page</a>.
<tr><td>2014-06-23:<td><strong>GF 3.6 released!</strong>
<a href="download/release-3.6.html">Release notes</a>.
<tr><td>2014-03-11:
<td>A company for commercial applications of GF has been founded:
<a href="http://www.digitalgrammars.com/">Digital Grammars</a>.
<tr><td>2013-11-25:
<td>The default character encoding in GF grammar files will be changed
from Latin-1 to UTF-8. See
<a href="download/encoding-change.html">GF character encoding changes</a>
for details.
<tr><td>2013-10-18:<td>New resource grammar language: Estonian.
See <a href="lib/doc/synopsis.html">library synopsis</a>.
<tr><td>2013-09-18:<td>New <a href="https://github.com/GrammaticalFramework/gf-contrib">GF contributions repository</a>, hosted on GitHub.
<tr><td>2013-08-06:<td><strong>GF 3.5 released!</strong>
<a href="download/release-3.5.html">Release notes</a>.
<tr><td>2013-07-26:<td>Started a page with <A HREF="lib/doc/rgl-publications.html">RGL Documentation and Publications</A>.
<tr><td>2013-06-24:<td>We are now running the IRC channel <a href="https://webchat.freenode.net/?channels=gf"><strong><code>#gf</code></strong></a> on the Freenode network.
<tr><td>2013-06-19:<td>New resource grammar language: Maltese.
See <a href="lib/doc/synopsis.html">library synopsis</a>.
<tr><td>2013-04-25:<td>New resource grammar language: Greek.
See <a href="lib/doc/synopsis.html">library synopsis</a>.
<tr><td>2013-01-31:<td><strong>GF 3.4 released!</strong>
<a href="download/release-3.4.html">Release notes</a>.
<tr><td>2012-12-10:<td>
<a href="http://www.postcrashgames.com/gf_world/">Resource Grammar Library
coverage map</a>, created by Tommi Nieminen.
<!--
<tr><td>2012-11-18:<td>
<A HREF="http://school.grammaticalframework.org/2013">GF Summer School</A>
in Frauenchiemsee, 18-30 August 2013.
<tr><td>2012-11-18:<td>New resource grammar language: Chinese.
See <a href="lib/doc/synopsis.html">library synopsis</a>.
Complete but not yet perfect.
<tr><td>2012-06-29:<td>GF sources now mirrored in GitHub, with change
statistics and other browsing features.
See <a href="https://github.com/GrammaticalFramework/GF/"><tt>github.com/GrammaticalFramework/GF</tt></a>
<tr><td>2012-05-07:<td>New resource grammar language: Japanese.
See <a href="lib/doc/synopsis.html">library synopsis</a>.
<tr><td>2012-03-23:<td>There will be a
<a href="gf-tutorial-icfp-2012/">GF tutorial at ICFP 2012</a>
in Copenhagen.
<tr><td>2012-03-03:<td><strong>GF 3.3.3 released!</strong>
<a href="download/release-3.3.3.html">Release notes</a>.
<tr><td>2012-02-24:<td>New resource grammar languages: Hindi, Sindhi.
See <a href="lib/doc/synopsis.html">library synopsis</a>.
<tr><td>2011-12-29:<td>New resource grammar languages: Latvian, Thai.
See <a href="lib/doc/synopsis.html">library synopsis</a>.
<tr><td>2011-10-27:<td><strong>GF 3.3 released!</strong>
<a href="download/release-3.3.html">Release notes</a>.
<tr><td>2011-09-20:<td>There is now a page collecting
<a href="doc/gf-editor-modes.html">editor modes for GF</a>.
Contributions are welcome!
<tr><td>2011-09-12:<td><strong>GF 3.2.9</strong> source snapshot with faster grammar compilation available. See <a href="download/index.html">Downloads</a>.
<tr><td>2011-04-22:<td><a href="android/tutorial/">JPGF Android Tutorial</a> added.
<tr><td>2011-04-15:<td>The <a href="gf-book">GF Book</a> is available.
<tr><td>2011-01-13:<td><a href="http://www.molto-project.eu/node/1177">Phrasedroid
available on the Android Market</a>.
<tr><td>2011-01-04:<td>GF is part of the
<a href="http://www.clt.gu.se/clt-toolkit">CLT Toolkit</a>.
<tr><td>2010-12-23:<td><strong>GF 3.2 released!</strong>
<a href="download/release-3.2.html">Release notes</a>.
-->
</table>
</div>
<H2>What is GF</H2>
<P>
GF, Grammatical Framework, is a programming language for GF, Grammatical Framework, is a programming language for
<B>multilingual grammar applications</B>. It is <strong>multilingual grammar applications</strong>. It is
</P> </p>
<UL> <ul>
<LI>a <B>special-purpose language for grammars</B>, like <li>a <strong>special-purpose language for grammars</strong>, like
<a href="http://dinosaur.compilertools.net/yacc/">YACC</a>, <a href="http://dinosaur.compilertools.net/yacc/">YACC</a>,
<a href="http://www.gnu.org/software/bison/">Bison</a>, <a href="http://www.gnu.org/software/bison/">Bison</a>,
<a href="http://www.haskell.org/happy/">Happy</a>, <a href="http://www.haskell.org/happy/">Happy</a>,
<a href="http://bnfc.digitalgrammars.com/">BNFC</a>, <a href="http://bnfc.digitalgrammars.com/">BNFC</a>,
but not restricted to programming languages but not restricted to programming languages
<LI>a <B>functional programming language</B>, like <li>a <strong>functional programming language</strong>, like
<a href="http://www.haskell.org/">Haskell</a>, <a href="http://www.haskell.org/">Haskell</a>,
<a href="http://en.wikipedia.org/wiki/Lisp_(programming_language)">Lisp</a>, <a href="http://en.wikipedia.org/wiki/Lisp_(programming_language)">Lisp</a>,
<a href="http://ocaml.org/">OCaml</a>, <a href="http://ocaml.org/">OCaml</a>,
<a href="http://www.smlnj.org/">SML</a>, <a href="http://www.smlnj.org/">SML</a>,
<a href="http://schemers.org/">Scheme</a>, <a href="http://schemers.org/">Scheme</a>,
but specialized to grammar writing but specialized to grammar writing
<LI>a <B>development platform for natural language grammars</B>, like <li>a <strong>development platform for natural language grammars</strong>, like
<a href="http://moin.delph-in.net/LkbTop">LKB</a>, <a href="http://moin.delph-in.net/LkbTop">LKB</a>,
<a href="http://www2.parc.com/isl/groups/nltt/xle/">XLE</a>, <a href="http://www2.parc.com/isl/groups/nltt/xle/">XLE</a>,
<a href="http://www.issco.unige.ch/en/research/projects/regulus/news.shtml">Regulus</a>, <a href="http://www.issco.unige.ch/en/research/projects/regulus/news.shtml">Regulus</a>,
but based on functional programming and type theory but based on functional programming and type theory
<LI>a <B>categorial grammar formalism</B>, like <li>a <strong>categorial grammar formalism</strong>, like
<a href="http://www.loria.fr/equipes/calligramme/acg/">ACG</a>, <a href="http://www.loria.fr/equipes/calligramme/acg/">ACG</a>,
<a href="http://openccg.sourceforge.net/">CCG</a>, <a href="http://openccg.sourceforge.net/">CCG</a>,
but specialized for multilingual grammars, but specialized for multilingual grammars,
<LI>a <B>logical framework</B>, like <li>a <strong>logical framework</strong>, like
<a href="http://wiki.portal.chalmers.se/agda/pmwiki.php">Agda</a>, <a href="http://wiki.portal.chalmers.se/agda/pmwiki.php">Agda</a>,
<a href="http://coq.inria.fr/">Coq</a>, <a href="http://coq.inria.fr/">Coq</a>,
<a href="http://www.cl.cam.ac.uk/research/hvg/Isabelle/">Isabelle</a>, <a href="http://www.cl.cam.ac.uk/research/hvg/Isabelle/">Isabelle</a>,
but equipped with concrete syntax in addition to logic but equipped with concrete syntax in addition to logic
<li>a <b>platform for machine translation</b>, like <li>a <strong>platform for machine translation</strong>, like
<a href="http://www.statmt.org/moses/">Moses</a>, <a href="http://www.statmt.org/moses/">Moses</a>,
<a href="http://www.apertium.org/">Apertium</a>, <a href="http://www.apertium.org/">Apertium</a>,
but based on deep structural analysis (and usually applied for but based on deep structural analysis (and usually applied for
limited fragments of language). limited fragments of language).
</UL> </ul>
<P> <p>
Don't worry if you don't know most of the references above - but if you do know at Don't worry if you don't know most of the references above - but if you do know at
least one, it may help you to get a first idea of what GF is. least one, it may help you to get a first idea of what GF is.
</P> </p>
<H2>Applications</H2>
<P>
GF can be used for building
</P>
<UL>
<LI><A HREF="http://cloud.grammaticalframework.org/translator/">translation systems</A>
<LI><A HREF="http://cloud.grammaticalframework.org/minibar/minibar.html">multilingual web gadgets</A>
<LI><A HREF="http://www.cs.chalmers.se/~hallgren/Alfa/Tutorial/GFplugin.html">natural-language interfaces</A>
<LI><A HREF="http://www.youtube.com/watch?v=1bfaYHWS6zU">dialogue systems</A>
<LI><A HREF="lib/doc/synopsis.html">natural language resources</A>
</UL>
<H2>Availability</H2> <div class="row">
<P>
GF is <B>open-source</B>, licensed under <A HREF="LICENSE">GPL</A> (the program) and
<A HREF="./LICENSE">LGPL</A> and <A HREF="./LICENSE">BSD</A> (the libraries). It
is available for
</P>
<UL>
<LI>Linux
<LI>Mac OS X
<LI>Windows
<li>Android mobile platform (via Java; runtime)
<LI>via compilation to JavaScript, almost any platform that has a web browser (runtime)
</UL>
<H2>Projects</H2> <div class="col-sm-6">
<P> <h2>Applications & Availability</h2>
GF was first created in 1998 at
<A HREF="http://www.xrce.xerox.com/">Xerox Research Centre Europe</A>,
Grenoble, in the project
Multilingual Document Authoring. At Xerox, it was used for prototypes including
a restaurant phrase book,
a database query system,
a formalization of an alarm system instructions with translations to 5 languages, and
an authoring system for medical drug descriptions.
</P>
<P>
Later projects using GF and involving third parties include, in chronological order,
</P>
<UL>
<LI><A HREF="http://www.cs.chalmers.se/~hallgren/Alfa/Tutorial/GFplugin.html">GF-Alfa</A>:
natural language interface to formal proofs
<LI><A HREF="http://efficient.citi.tudor.lu/index_noframe.html">Efficient</A>:
authoring tool for business models.
<LI><A HREF="http://www.key-project.org/">GF-KeY</A>:
authoring and translation of software specifications
<LI><A HREF="http://www.talk-project.org">TALK</A>:
multilingual and multimodal spoken dialogue systems
<LI><A HREF="http://webalt.math.helsinki.fi/">WebALT</A>:
multilingual generation of mathematical exercises (commercial project)
<LI><A HREF="http://spraakbanken.gu.se/sal/">SALDO</A>:
Swedish morphological dictionary based on rules developed for GF and
<A HREF="http://www.cse.chalmers.se/alumni/markus/FM/">Functional Morphology</A>
<LI><a href="http://www.molto-project.eu">MOLTO</a>:
multilingual online translation
<LI><a href="http://remu.grammaticalframework.org">REMU</a>:
reliable multilingual digital communication.
</UL>
<p> <p>
Here is a <a GF can be used for building
href="http://videos.xrce.xerox.com/index.php/videos/index/618">talk <a href="http://cloud.grammaticalframework.org/translator/">translation systems</a>,
about GF at XRCE</a>, <a href="http://cloud.grammaticalframework.org/minibar/minibar.html">multilingual web gadgets</a>,
14 years later. <a href="http://www.cs.chalmers.se/~hallgren/Alfa/Tutorial/GFplugin.html">natural-language interfaces</a>,
<a href="http://www.youtube.com/watch?v=1bfaYHWS6zU">dialogue systems</a>, and
<a href="lib/doc/synopsis.html">natural language resources</a>.
</p>
<P> <p>
Academically, GF has been used in at least ten PhD theses and resulted GF is <strong>open-source</strong>, licensed under <a href="liCENSE">GPL</a> (the program) and
in more than a hundred <a href="./liCENSE">LGPL</a> and <a href="./liCENSE">BSD</a> (the libraries). It
scientific publications (see <A HREF="doc/gf-bibliography.html">GF publication list</A>). is available for
</P> </p>
<H2>Programming in GF</H2> <ul>
<P> <li>Linux
GF is easy to learn by following the <A HREF="doc/tutorial/gf-tutorial.html">tutorial</A>. <li>Mac OS X
<li>Windows
<li>Android mobile platform (via Java; runtime)
<li>via compilation to JavaScript, almost any platform that has a web browser (runtime)
</ul>
<h2>Programming in GF</h2>
<p>
GF is easy to learn by following the <a href="doc/tutorial/gf-tutorial.html">tutorial</a>.
You can write your first translator in 15 minutes. You can write your first translator in 15 minutes.
</P> </p>
<P> <p>
GF has an interactive command interpreter, as well as a batch compiler. GF has an interactive command interpreter, as well as a batch compiler.
Grammars can be compiled to parser and translator code in many different Grammars can be compiled to parser and translator code in many different
formats. These components can then be embedded in applications written formats. These components can then be embedded in applications written
in other programming languages. The formats currently supported are: in other programming languages. The formats currently supported are:
</P> </p>
<UL> <ul>
<LI>Haskell <li>Haskell
<li>Java, in particular the Android platform <li>Java, in particular the Android platform
<LI>JavaScript <li>JavaScript
<LI>Speech recognition: HTK/ATK, Nuance, JSGF <li>Speech recognition: HTK/ATK, Nuance, JSGF
</UL> </ul>
<P> <p>
The GF programming language is high-level and advanced, featuring The GF programming language is high-level and advanced, featuring
</P> </p>
<UL> <ul>
<LI>static type checking <li>static type checking
<LI>higher-order functions <li>higher-order functions
<LI>dependent types <li>dependent types
<LI>pattern matching with data constructors and regular expressions <li>pattern matching with data constructors and regular expressions
<LI>module system with multiple inheritance and parametrized modules <li>module system with multiple inheritance and parametrized modules
</UL> </ul>
<h3>Getting help</h3> <h3>Getting help</h3>
<p> <p>
@@ -357,62 +208,142 @@ IRC logs (in raw format) are available <a href="irc/">here</a>.
If you have a larger question which the community may benefit from, we recommend you ask it on the <a href="http://groups.google.com/group/gf-dev">mailing list</a>. If you have a larger question which the community may benefit from, we recommend you ask it on the <a href="http://groups.google.com/group/gf-dev">mailing list</a>.
</p> </p>
<H2>Libraries</H2> </div>
<P>
<div class="col-sm-6">
<h2>News</h2>
<dl class="row">
<dt class="col-sm-3 text-center">2018-11-28</dt>
<dd class="col-sm-9">
<strong>GF 18.12 released.</strong>
</dd>
<dt class="col-sm-3 text-center">2018-07-25</dt>
<dd class="col-sm-9">
The GF repository has been split in two:
<a href="https://github.com/GrammaticalFramework/gf-core">gf-core</a> and
<a href="https://github.com/GrammaticalFramework/gf-rgl">gf-rgl</a>.
The original <a href="https://github.com/GrammaticalFramework/GF">GF</a> repository is now archived.
</dd>
<dt class="col-sm-3 text-center">2017-08-11</dt>
<dd class="col-sm-9">
<strong>GF 3.9 released.</strong>
<a href="download/release-3.9.html">Release notes</a>
</dd>
<dt class="col-sm-3 text-center">2017-06-29</dt>
<dd class="col-sm-9">
GF is moving to <a href="https://github.com/GrammaticalFramework/GF/">GitHub</a>.</dd>
<dt class="col-sm-3 text-center">2017-03-13</dt>
<dd class="col-sm-9">
<a href="http://school.grammaticalframework.org/2017/">GF Summer School</a> in Riga (Latvia), 14-25 August 2017
</dd>
</dl>
<h2>Projects</h2>
<p>
GF was first created in 1998 at
<a href="http://www.xrce.xerox.com/">Xerox Research Centre Europe</a>,
Grenoble, in the project
Multilingual Document Authoring. At Xerox, it was used for prototypes including
a restaurant phrase book,
a database query system,
a formalization of an alarm system instructions with translations to 5 languages, and
an authoring system for medical drug descriptions.
</p>
<p>
Later projects using GF and involving third parties include, in chronological order,
</p>
<ul>
<li><a href="http://www.cs.chalmers.se/~hallgren/Alfa/Tutorial/GFplugin.html">GF-Alfa</a>:
natural language interface to formal proofs
<li><a href="http://efficient.citi.tudor.lu/index_noframe.html">Efficient</a>:
authoring tool for business models.
<li><a href="http://www.key-project.org/">GF-KeY</a>:
authoring and translation of software specifications
<li><a href="http://www.talk-project.org">TALK</a>:
multilingual and multimodal spoken dialogue systems
<li><a href="http://webalt.math.helsinki.fi/">WebALT</a>:
multilingual generation of mathematical exercises (commercial project)
<li><a href="http://spraakbanken.gu.se/sal/">SALDO</a>:
Swedish morphological dictionary based on rules developed for GF and
<a href="http://www.cse.chalmers.se/alumni/markus/FM/">Functional Morphology</a>
<li><a href="http://www.molto-project.eu">MOLTO</a>:
multilingual online translation
<li><a href="http://remu.grammaticalframework.org">REMU</a>:
reliable multilingual digital communication.
</ul>
<p>
Here is a <a
href="http://videos.xrce.xerox.com/index.php/videos/index/618">talk
about GF at XRCE</a>,
14 years later.
<p>
Academically, GF has been used in at least ten PhD theses and resulted
in more than a hundred
scientific publications (see <a href="doc/gf-bibliography.html">GF publication list</a>).
</p>
<h2>Libraries</h2>
<p>
Libraries are at the heart of modern software engineering. In natural language Libraries are at the heart of modern software engineering. In natural language
applications, libraries are a way to cope with thousands of details involved in applications, libraries are a way to cope with thousands of details involved in
syntax, lexicon, and inflection. The syntax, lexicon, and inflection. The
<A HREF="lib/doc/synopsis.html">GF resource grammar library</A> has <a href="lib/doc/synopsis.html">GF resource grammar library</a> has
support for an increasing number of languages, currently including support for an increasing number of languages, currently including
</P> Afrikaans,
<ol class=languages> Amharic (partial),
<LI>Afrikaans Arabic (partial),
<LI>Amharic (partial) Bulgarian,
<LI>Arabic (partial) Catalan,
<LI>Bulgarian Chinese,
<LI>Catalan Danish,
<LI>Chinese Dutch,
<LI>Danish English,
<LI>Dutch Estonian,
<LI>English Finnish,
<LI>Estonian French,
<LI>Finnish German,
<LI>French Greek ancient (partial),
<LI>German Greek modern,
<li>Greek ancient (partial) Hebrew (fragments),
<li>Greek modern Hindi,
<li>Hebrew (fragments) Interlingua,
<LI>Hindi Japanese,
<LI><A HREF="http://www.interlingua.com/">Interlingua</A> Italian,
<LI>Japanese Latin (fragments),
<LI>Italian Latvian,
<LI>Latin (fragments) Maltese,
<LI>Latvian Mongolian,
<li>Maltese Nepali,
<li>Mongolian Norwegian bokmål,
<LI>Nepali Norwegian nynorsk,
<LI>Norwegian bokmål Persian,
<LI>Norwegian nynorsk Polish,
<LI>Persian Punjabi,
<LI>Polish Romanian,
<li>Punjabi Russian,
<LI>Romanian Sindhi,
<LI>Russian Slovene (partial),
<LI>Sindhi Spanish,
<LI>Slovene (partial) Swahili (fragments),
<LI>Spanish Swedish,
<li>Swahili (fragments) Thai,
<LI>Swedish Turkish (fragments),
<LI>Thai Urdu
<LI>Turkish (fragments) </p>
<LI>Urdu
</ol>
<P> <p>
Adding a language to the resource library takes 3 to 9 Adding a language to the resource library takes 3 to 9
months - contributions months - contributions
are welcome! You can start with the <A HREF="doc/gf-lrec-2010.pdf">resource grammarian's tutorial</A>. are welcome! You can start with the <a href="doc/gf-lrec-2010.pdf">resource grammarian's tutorial</a>.
</p>
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