content_sources.html

---
title: Sources and Downloads - SECONDO
description: How to obtain the SECONDO sources - cloning the current development version from GitHub, the last official release, GUI-only binaries, scripts, and older versions.
last_changed: 2026-08-31
---

<h1> Sources and Downloads </h1>

<p>
This page provides two ways to obtain the <span class="secondo">Secondo</span> sources.
The <b>current development version</b> is hosted on GitHub and contains the latest
changes and bug fixes. In addition, the source package of the <b>last official
release</b> is available for download.
</p>

<section class="section">
<h2> Current Development Version </h2>

<p>
If you want to use the latest development version of <span class="secondo">Secondo</span>,
you can obtain the sources from
<a href="https://github.com/secondo-database/secondo" target="_blank">GitHub</a>.
Clone the repository with:
</p>

{% highlight bash %}
git clone https://github.com/secondo-database/secondo.git
{% endhighlight %}

</section>

<section class="section">
<h2> Last Official Release </h2>
If you prefer to use a stable version of <span class="secondo">Secondo</span>, you can download the source package of the last official release. 
<p>
This release is known to work with:
</p>
<ul>
  <li> Ubuntu 16.04, 18.04, 20.04, 20.10 </li>
  <li> Debian 10 / 11 </li>
  <li> OS X 10.15 Catalina, macOS 11.00 Big Sur </li>
</ul>

<div class="table-wrap">
<table class="datatable">
<tr>
  <td><b>Release Date</b></td>
  <td>2021-09-03</td>
</tr>
<tr>
  <td><b>Version</b></td>
  <td>Secondo 4.3.0</td>
</tr>
<tr>
  <td><b>Download Size</b></td>
  <td>100 MB</td>
</tr>
<tr>
  <td><b>Download</b></td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/RC_430" target="_blank">Release RC_430 on GitHub</a></td>
</tr>
<tr>
  <td><b>Release notes</b></td>
  <td><a href="content_releasenotes.html#v430">Release notes, Version 4.3.0</a></td>
</tr>
</table>
</div>

<p>
Download and unpack the release with:
</p>

{% highlight bash %}
curl -L -O https://github.com/secondo-database/secondo/archive/refs/tags/RC_430.tar.gz
tar xzf RC_430.tar.gz
{% endhighlight %}
</section>

<section class="section">
<h2 id="gui"> GUI Binaries </h2>

<p>
In order to connect to a running <span class="secondo">Secondo</span> server, it is not
required to install a complete <span class="secondo">Secondo</span> system on the client.
Rather, it is sufficient to copy the binaries of the
<span class="secondo">Secondo</span> GUI to the client. The GUI will run on each system
having an installed Java in the needed version.
</p>

<div class="table-wrap">
<table class="datatable">
<tr>
  <th>Link</th>
  <th>Date</th>
  <th>Size</th>
  <th>md5sum</th>
</tr>
<tr>
  <td><a class="btn" href="files/Binaries/Javagui_2019_12_18.zip">Download</a></td>
  <td>2019-12-18</td>
  <td>20 MB</td>
  <td><code>9f21a045d42a1d8c64915cd3641bc778</code></td>
</tr>
</table>
</div>
</section>

<section class="section">
<h2 id="scripts"> Scripts </h2>

<p>
Here, we provide some <span class="secondo">Secondo</span> scripts.
</p>

<div class="table-wrap">
<table class="datatable">
<tr>
  <th>Link</th>
  <th>Info</th>
</tr>
<tr>
  <td><a href="files/scripts/nrwImportShapeNew.psec">nrwImportShapeNew.psec</a></td>
  <td>Script importing shape files from geofabrik in format valid since August 2016</td>
</tr>
<tr>
  <td><a href="files/scripts/ParallelNTreeConstruction.psec.pdf">ParallelNTreeConstruction.psec.pdf</a></td>
  <td>Parallel construction of an N-Tree using the Distributed Algebra</td>
</tr>
</table>
</div>
</section>

<section class="section">
<h2 id="license"> License </h2>

<p>
<span class="secondo">Secondo</span> is free software. It is distributed under the
<a href="https://www.gnu.org/licenses/old-licenses/gpl-2.0.html" target="_blank" rel="noopener noreferrer">GNU
General Public License, version 2</a>. The full
licence text is included with the sources as
<a href="https://github.com/secondo-database/secondo/blob/master/LICENSE.TXT" target="_blank" rel="noopener noreferrer"><code>LICENSE.TXT</code></a>.
</p>
</section>

<section class="section">
<h2> Old Versions </h2>

<p>
For some nostalgic reasons, here some old and even older versions can be found.
</p>

<div class="table-wrap">
<table class="datatable">
<tr>
  <th>Date</th>
  <th>Version</th>
  <th>Source Code</th>
  <th>Notes</th>
</tr>

<tr>
  <td>2020-05-20</td>
  <td>4.2.0</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/RC_420" target="_blank">Source Code</a></td>
  <td><a href="content_releasenotes.html#v420">Release notes</a></td>
</tr>

<tr>
  <td>2019-09-30</td>
  <td>4.1.3</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/secondo_V4_1_3_RC1" target="_blank">Source Code</a></td>
  <td></td>
</tr>

<tr>
  <td>2018-09-19</td>
  <td>4.1.2</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/RC_412" target="_blank">Source Code</a></td>
  <td><a href="content_releasenotes.html#v412">Release notes</a></td>
</tr>

<tr>
  <td>2016-12-22</td>
  <td>4.1.0</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/RC4_1" target="_blank">Source Code</a></td>
  <td><a href="content_releasenotes.html#v410">Release notes</a></td>
</tr>

<tr>
  <td>2016-10-14</td>
  <td>4.0.0</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/Release-4-0-0" target="_blank">Source Code</a></td>
  <td><a href="content_releasenotes.html#v400">Release notes</a></td>
</tr>

<tr>
  <td>2014-10-02</td>
  <td>3.4.0</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/rc340" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v340.txt">Release notes</a></td>
</tr>

<tr>
  <td>2012-11-05</td>
  <td>3.3.0</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/RC330" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v330.txt">Release notes</a></td>
</tr>

<tr>
  <td>2012-10-23</td>
  <td>3.2.2</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/R322" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v321.txt">Release notes</a></td>
</tr>

<tr>
  <td>2012-01-02</td>
  <td>3.2.1</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/v321" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v320.txt">Release notes</a></td>
</tr>

<tr>
  <td>2011-08-17</td>
  <td>3.1.1</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/Secondo3_1_1rc2" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v310.txt">Release notes</a></td>
</tr>

<tr>
  <td>2010-06-25</td>
  <td>3.0.0</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/Secondo_3_0_rc1" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v30.txt">Release notes</a></td>
</tr>

<tr>
  <td>2009-08-21</td>
  <td>2.9.0</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/v2-9-0" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v29.txt">Release notes</a></td>
</tr>

<tr>
  <td>2009-06-04</td>
  <td>2.8.4</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/v284" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v284.txt">Release notes</a></td>
</tr>

<tr>
  <td>2009-01-05</td>
  <td>2.8.3</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/V2_8_3" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v283.txt">Release notes</a></td>
</tr>

<tr>
  <td>2008-12-19</td>
  <td>2.8.2</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/V2_8_2" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v282.txt">Release notes</a></td>
</tr>

<tr>
  <td>2008-12-15</td>
  <td>2.8.1</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/V2_8_1_Winter08Edition_1" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v281.txt">Release notes</a></td>
</tr>

<tr>
  <td>2008-07-01</td>
  <td>2.7</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/v27" target="_blank">Source Code</a></td>
  <td></td>
</tr>

<tr>
  <td>2008-01-14</td>
  <td>2.6</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/v26" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes-v26.txt">Release notes</a></td>
</tr>

<tr>
  <td>2007-09-05</td>
  <td>2.5</td>
  <td><a href="https://github.com/secondo-database/secondo/releases/tag/v25" target="_blank">Source Code</a></td>
  <td><a href="files/Sources/release-notes/Release-Notes.txt">Release notes</a></td>
</tr>

</table>
</div>
</section>