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168<li class="toctree-l1 current active"><a class="current reference internal" href="#">About</a></li>
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173<li class="toctree-l1"><a class="reference external" href="https://wiki.mercurial-scm.org/UsingExtensions">Extensions</a></li>
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175<li class="toctree-l1 has-children"><a class="reference internal" href="relnotes.html">Release Notes</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
176<li class="toctree-l2"><a class="reference internal" href="relnotes/7.2.html">Mercurial 7.2 (2026-01-29)</a></li>
177<li class="toctree-l2"><a class="reference internal" href="relnotes/7.1.html">Mercurial 7.1 (2025-08-04)</a></li>
178<li class="toctree-l2"><a class="reference internal" href="relnotes/7.0.html">Mercurial 7.0 (2025-03-25)</a></li>
179<li class="toctree-l2"><a class="reference internal" href="relnotes/6.9.html">Mercurial 6.9 (2024-11-20)</a></li>
180<li class="toctree-l2"><a class="reference internal" href="relnotes/6.8.html">Mercurial 6.8 (2024-07-08)</a></li>
181<li class="toctree-l2"><a class="reference internal" href="relnotes/6.7.html">Mercurial 6.7 (2024-03-15)</a></li>
182<li class="toctree-l2"><a class="reference internal" href="relnotes/6.6.html">Mercurial 6.6 (2023-11-07)</a></li>
183<li class="toctree-l2"><a class="reference internal" href="relnotes/6.5.html">Mercurial 6.5 (2023-07-06)</a></li>
184<li class="toctree-l2"><a class="reference internal" href="relnotes/6.4.html">Mercurial 6.4 (2023-03-23)</a></li>
185<li class="toctree-l2"><a class="reference internal" href="relnotes/6.3.html">Mercurial 6.3 (2022-11-09)</a></li>
186<li class="toctree-l2"><a class="reference internal" href="relnotes/6.2.html">Mercurial 6.2 (2022-07-11)</a></li>
187<li class="toctree-l2"><a class="reference internal" href="relnotes/6.1.html">Mercurial 6.1 (2022-02-28)</a></li>
188<li class="toctree-l2"><a class="reference internal" href="relnotes/6.0.html">Mercurial 6.0 (2021-11-17)</a></li>
189<li class="toctree-l2"><a class="reference internal" href="relnotes/5.9.html">Mercurial 5.9 (2021-08-16)</a></li>
190<li class="toctree-l2"><a class="reference internal" href="relnotes/5.8.html">Mercurial 5.8 (2021-05-01)</a></li>
191<li class="toctree-l2"><a class="reference internal" href="relnotes/5.7.html">Mercurial 5.7 (2021-01-29)</a></li>
192<li class="toctree-l2"><a class="reference internal" href="relnotes/5.6.html">Mercurial 5.6 (2020-10-29)</a></li>
193<li class="toctree-l2"><a class="reference internal" href="relnotes/5.5.html">Mercurial 5.5 (2020-08-01)</a></li>
194<li class="toctree-l2"><a class="reference internal" href="relnotes/5.4.html">Mercurial 5.4 (2020-04-16)</a></li>
195<li class="toctree-l2"><a class="reference internal" href="relnotes/5.3.html">Mercurial 5.3 (2020-01-29)</a></li>
196<li class="toctree-l2"><a class="reference internal" href="relnotes/5.2.html">Mercurial 5.2 (2019-11-05)</a></li>
197<li class="toctree-l2"><a class="reference internal" href="relnotes/5.1.html">Mercurial 5.1 (2019-07-28)</a></li>
198<li class="toctree-l2"><a class="reference internal" href="relnotes/5.0.html">Mercurial 5.0 (2019-04-25)</a></li>
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202<li class="toctree-l2"><a class="reference internal" href="relnotes/4.6.html">Mercurial 4.6 (2017-11-30)</a></li>
203<li class="toctree-l2"><a class="reference internal" href="relnotes/4.5.html">Mercurial 4.5 (2018-02-01)</a></li>
204<li class="toctree-l2"><a class="reference internal" href="relnotes/4.4.html">Mercurial 4.4 (2017-11-01)</a></li>
205<li class="toctree-l2"><a class="reference internal" href="relnotes/4.3.html">Mercurial 4.3 (2017-08-07)</a></li>
206<li class="toctree-l2"><a class="reference internal" href="relnotes/4.2.html">
206Mercurial 4.2 (2017-05-02)</a></li>
207<li class="toctree-l2"><a class="reference internal" href="relnotes/4.1.html">Mercurial 4.1 (2017-02-01)</a></li>
208<li class="toctree-l2"><a class="reference internal" href="relnotes/4.0.html">Mercurial 4.0 (2016-11-01)</a></li>
209<li class="toctree-l2"><a class="reference internal" href="relnotes/3.9.html">Mercurial 3.9 (2016-08-01)</a></li>
210<li class="toctree-l2"><a class="reference internal" href="relnotes/3.8.html">Mercurial 3.8 (2016-04-30)</a></li>
211<li class="toctree-l2"><a class="reference internal" href="relnotes/3.7.html">Mercurial 3.7 (2016-02-01)</a></li>
212</ul>
213</details></li>
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215<li class="toctree-l2"><a class="reference internal" href="contribute-website.html">Contribute to hg-website</a></li>
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343<li class="toc-h1 nav-item toc-entry"><a class="reference internal nav-link" href="#">About</a></li>
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345<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#distributed-architecture">Distributed architecture</a></li>
346<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#fast">Fast</a></li>
347<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#platform-independent">Platform independent</a></li>
348<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#extensible">Extensible</a></li>
349<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#easy-to-use">Easy to use</a></li>
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366                   <section class="tex2jax_ignore mathjax_ignore" id="about">
367<h1 class="sd-d-none">About<a class="headerlink" href="#about" title="Link to this heading">#</a></h1>
368</section>
369<section class="tex2jax_ignore mathjax_ignore" id="mercurial-source-control-management">
370<h1>Mercurial source control management<a class="headerlink" href="#mercurial-source-control-management" title="Link to this heading">#</a></h1>
371<p><strong>Mercurial is a free, distributed source control management tool. It offers you the
372power to efficiently handle projects of any size while using an intuitive interface. It
373is easy to use and hard to break, making it ideal for anyone working with versioned
374files.</strong></p>
375<section id="distributed-architecture">
376<h2>Distributed architecture<a class="headerlink" href="#distributed-architecture" title="Link to this heading">#</a></h2>
377<p>Traditional version control systems such as Subversion use typical client-server
378architectures with a central server to store the revisions of a project. In contrast,
379Mercurial is truly distributed, giving each developer a local copy of the entire
380development history, working independently of network access or a central server.
381Committing, branching and merging are fast and cheap.</p>
382</section>
383<section id="fast">
384<h2>Fast<a class="headerlink" href="#fast" title="Link to this heading">#</a></h2>
385<p>Mercurial’s implementation and data structures are designed to be fast. You can generate
386diffs between revisions, or jump back in time within seconds. Therefore Mercurial is
387perfectly suitable for large projects such as Firefox (<a class="reference external" href="https://hg.mozilla.org/">https://hg.mozilla.org/</a>) or
388<a class="reference external" href="https://heptapod.net/">Heptapod</a> (a GitLab fork supporting Mercurial,
389<a class="reference external" href="https://foss.heptapod.net/heptapod/">hg repositories</a>).</p>
390</section>
391<section id="platform-independent">
392<h2>Platform independent<a class="headerlink" href="#platform-independent" title="Link to this heading">#</a></h2>
393<p>Mercurial was written with platform independence in mind, and so most of Mercurial is
394written in Python, with a small part in portable C for performance reasons. As a result,
395binary releases are available on all major platforms. We also have a growing part that is
396written in Rust - although it only currently officially supports Linux - binary releases
397for which are coming very soon.</p>
398</section>
399<section id="extensible">
400<h2>Extensible<a class="headerlink" href="#extensible" title="Link to this heading">#</a></h2>
401<p>The functionality of Mercurial can be increased with extensions, either by activating the
402official ones which are shipped with Mercurial, downloading some
403<a class="reference external" href="https://www.mercurial-scm.org/wiki/UsingExtensions">from the wiki</a> or by
404<a class="reference external" href="https://www.mercurial-scm.org/wiki/WritingExtensions">writing your own</a>. Extensions are
405written in Python and can change the workings of the basic commands, add new commands and
406access all the core functionality of Mercurial.</p>
407</section>
408<section id="easy-to-use">
409<h2>Easy to use<a class="headerlink" href="#easy-to-use" title="Link to this heading">#</a></h2>
410<p>Mercurial sports a consistent command set, in which most Subversion users feel right at
411home. Potentially dangerous actions are available via extensions you need to enable, so
412the basic interface is easy to use, easy to learn and hard to break. The
413<a class="reference internal" href="quickstart.html"><span class="std std-doc">Quick Start</span></a> should get you going in a just few minutes.</p>
414</section>
415<section id="open-source">
416<h2>Open source<a class="headerlink" href="#open-source" title="Link to this heading">#</a></h2>
417<p>Mercurial is free software licensed under the terms of the
418<a class="reference external" href="http://www.gnu.org/licenses/gpl-2.0.txt">GNU General Public License Version 2</a> or any
419later version.</p>
420</section>
421<section id="similar-projects">
422<h2>Similar projects<a class="headerlink" href="#similar-projects" title="Link to this heading">#</a></h2>
423<p>Mercurial is used for version control of files. Similar projects include <a class="reference external" href="https://git-scm.com/">Git</a>, <a class="reference external" href="https://pijul.org/">Pijul</a>
424or <a class="reference external" href="https://github.com/jj-vcs/jj">Jujutsu</a>. Version control systems without a distributed architecture include
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