index.html

---
layout: splash
title: "ROOT: analyzing petabytes of data, scientifically."
author_profile: false
excerpt: "An open-source data analysis framework used by [high energy physics](https://en.wikipedia.org/wiki/Particle_physics) and others."
header:
  og_image: /assets/images/ROOT-image-share.png
  overlay_image: /assets/images/splash_optimized.jpg
  actions:
    - label: '<i class="fas fa-info-circle"></i> Learn more'
      url: "about"
    - label: '<i class="fas fa-download"></i> Install v{% include root_stable_version %}'
      url: /install
feature_row:
  - title: '<img src="assets/images/histoIcon.svg" alt="*.*" width="65" height="65">'
    excerpt: "ROOT enables <i>statistically sound</i> scientific analyses and visualization of large amounts of data: today, more than 1 exabyte (1,000,000,000 gigabyte) are stored in ROOT files. [The Higgs was found with ROOT!](gallery#higgs-plots)"
  - title: '<img src="assets/images/code.svg" alt="*.*" width="65" height="65">'
    excerpt: "ROOT is [open source](about/license), which means that you can use it freely and [modify it](install/build_from_source). It adopts an open development process, inviting [its users to contribute to it](contribute)."
  - title: '$ _'
    excerpt: "ROOT comes with an [incredible C++ interpreter](primer#learn-c-at-the-root-prompt), ideal for <i>fast prototyping</i>. Don't like C++? ROOT integrates super-smoothly with Python thanks to its [unique dynamic and powerful Python &#8644; C++ binding](manual/python/). Or what about [using ROOT in a Jupyter notebook](https://nbviewer.jupyter.org/url/root.cern/doc/master/notebooks/rf301_composition.C.nbconvert.ipynb)?"
---


<div style="width: 100%;">
    <center>
    <div style="width: 25%; display:inline-block;">
        <div><a href="{{ '/learn' | relative_url }}"><img style="box-shadow: none;" width="128" src="{{'/assets/images/start.svg' | relative_url}}"></a></div>
        <div style="padding: 20px 0"><font color="#346295" style="font-weight:bold;" size="3">Learn</font></div>
    </div><!--
    --><div style="width: 25%; display:inline-block;">
        <div><a href="https://root.cern/doc/v{% include root_stable_version_short %}"><img style="box-shadow: none;" width="128" src="{{'/assets/images/doc.svg' | relative_url}}"></a></div>
        <div style="padding: 20px 0"><font color="#346295" style="font-weight:bold;" size="3">Reference</font></div>
    </div><!--
    --><div style="width: 25%; display:inline-block;">
        <div><a href="https://root-forum.cern.ch"><img style="box-shadow: none;" width="128" src="{{'/assets/images/forum.svg' | relative_url}}"></a></div>
        <div style="padding: 20px 0"><font color="#346295" style="font-weight:bold;" size="3">Forum</font></div>
    </div><!--
    --><div style="width: 25%; display:inline-block;">
        <div><a href="{{ '/gallery' | relative_url }}"><img style="box-shadow: none;" width="128" src="{{'/assets/images/gallery.svg' | relative_url}}"></a></div>
        <div style="padding: 20px 0"><font color="#346295" style="font-weight:bold;" size="3">Gallery</font></div>
    </div>
    </center>
</div>

<br><br>
{% include feature_row id="intro" type="center" %}

{% include feature_row id="feature_row" %}


<table style="width: 100%; margin-top:4px; border-spacing: 0px;">
   <tbody>
      <tr>
         <td style="width:68%; border:1px solid #cedff2; padding:0; background:#f5faff; vertical-align:top">
            <div style="padding:0.1em 0.6em;">
               {% for post in site.posts limit:5 %}
               <font size="4"><b><a href="{{ post.url | relative_url }}">{{ post.title }}</a></b></font> <font size="1">({{post.date | date_to_string}})</font>
               <font size="2">{{ post.excerpt }}</font>
               {% endfor %}
               <b><a href="{{'/blog' | relative_url}}"> More ...</a></b>
            </div>
         </td>
         <td style="border:0px;">
         </td>
         <td style="width:32%; border:1px solid #cedff2; padding:0; background:#f5faff; vertical-align:top;">
            <h1 style="margin:0.3em; background:#cedff2; font-family:inherit; font-weight:bold; border:1px solid #a3bfb1; padding:0.2em 0.4em;">Latest Releases</h1>
            <br>
            <div style="padding:0.1em 0.6em;">
               <font size="2">
               {% include releases_list number=5 single_column="yes" %}
               <br>
               <b><a href="{{'/install/all_releases' | relative_url}}"> More ...</a></b>
               </font>
            </div>
            <br>
         </td>
      </tr>
   </tbody>
</table>