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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>AppStream</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 3.2.1" /><meta name="package" content="AppStream-AppStream-0.7-en-US-0.0-0" /><meta name="description" content="AppStream is a cross-distro effort for enhancing the way we interact with the software repositories provided by the distribution by standardizing sets of additional metadata. AppStream provides the foundation to build software-center applications. It additionally provides specifications for things like an unified software metadata database, screenshot services and various other things needed to create user-friendly application-centers for (Linux) distributions." /><link rel="home" href="index.html" title="AppStream" /><link rel="next" href="chap-AppStream-About.html" title="Chapter 1. About AppStream" /></head><body><p id="title"><a class="left" href="http://www.freedesktop.org/wiki/Distributions/AppStream/"><img alt="Product Site" src="Common_Content/images//image_left.png" /></a><a class="right" href="http://www.freedesktop.org/software/appstream/docs/"><img alt="Documentation Site" src="Common_Content/images//image_right.png" /></a></p><ul class="docnav top"><li class="previous"></li><li class="home">AppStream</li><li class="next"><a accesskey="n" href="chap-AppStream-About.html"><strong>Next</strong></a></li></ul><div class="book"><div class="titlepage"><div><div class="producttitle"><span class="productname">AppStream</span> <span class="productnumber">0.7</span></div><div><h1 class="title"><a id="idm140263160526352"></a>AppStream</h1></div><div><h2 class="subtitle">Infrastructure for distro-agnostic software-centers and software metadata handling</h2></div><p class="edition">Edition 1</p><div><h3 class="corpauthor">
<span class="inlinemediaobject"><img src="images/appstream-logo.png" /></span>
</h3></div><div><div class="authorgroup"><div class="author"><h3 class="author"><span class="firstname">Matthias</span> <span class="surname">Klumpp</span></h3><div class="affiliation"><span class="orgname">Debian</span></div><code class="email"><a class="email" href="mailto:mak@debian.org">mak@debian.org</a></code></div><div class="author"><h3 class="author"><span class="firstname">Michael</span> <span class="surname">Vogt</span></h3><div class="affiliation"><span class="orgname">Canonical / Ubuntu / Debian</span></div><code class="email"><a class="email" href="mailto:mvo@ubuntu.com">mvo@ubuntu.com</a></code></div><div class="author"><h3 class="author"><span class="firstname">Richard</span> <span class="surname">Hughes</span></h3><div class="affiliation"><span class="orgname">Fedora / Red Hat</span></div><code class="email"><a class="email" href="mailto:richard@hughsie.com">richard@hughsie.com</a></code></div><div class="author"><h3 class="author"><span class="firstname">Vincent</span> <span class="surname">Untz</span></h3><div class="affiliation"><span class="orgname">OpenSUSE</span></div><code class="email"><a class="email" href="mailto:vuntz@opensuse.org">vuntz@opensuse.org</a></code></div></div></div><div><div class="legalnotice"><a id="idm140263148930592"></a><h1 class="legalnotice">Legal Notice</h1><div class="para">
Copyright <span class="trademark"></span>© 2012-2014 Matthias Klumpp. This material may only be distributed subject to the terms and conditions set forth in the GNU Free Documentation License (GFDL), V1.2 with no invariant sections or later (the latest version is presently available at <a href="http://www.gnu.org/licenses/fdl.txt">http://www.gnu.org/licenses/fdl.txt</a>).
</div></div></div><div><div class="abstract"><p class="title"><strong>Abstract</strong></p><div class="para">
AppStream is a cross-distro effort for enhancing the way we interact with the software repositories provided by the distribution by standardizing sets of additional metadata.
</div><div class="para">
AppStream provides the foundation to build software-center applications. It additionally provides specifications for things like an unified software metadata database, screenshot services and various other things needed to create user-friendly application-centers for (Linux) distributions.
</div></div></div></div></div><div class="toc"><dl class="toc"><dt><span class="chapter"><a href="chap-AppStream-About.html">1. About AppStream</a></span></dt><dd><dl><dt><span class="section"><a href="chap-AppStream-About.html#about-whatis">1.1. What is AppStream?</a></span></dt></dl></dd><dt><span class="chapter"><a href="chap-Metadata.html">2. Upstream Metadata</a></span></dt><dd><dl><dt><span class="section"><a href="chap-Metadata.html#sect-Metadata-GenericComponent">2.1. Generic Component</a></span></dt><dt><span class="section"><a href="sect-Metadata-Application.html">2.2. Desktop Applications</a></span></dt><dt><span class="section"><a href="sect-Metadata-Addon.html">2.3. Addons</a></span></dt><dt><span class="section"><a href="sect-Metadata-Codec.html">2.4. Codecs</a></span></dt><dt><span class="section"><a href="sect-Metadata-InputMethod.html">2.5. Input Methods</a></span></dt></dl></dd><dt><span class="chapter"><a href="chap-DistroData.html">3. Distribution Metadata and Services</a></span></dt><dd><dl><dt><span class="section"><a href="chap-DistroData.html#sect-AppStream-ASXML">3.1. AppStream distribution XML files</a></span></dt><dt><span class="section"><a href="sect-AppStream-IconCache.html">3.2. Icon Cache</a></span></dt></dl></dd><dt><span class="chapter"><a href="chap-Quickstart.html">4. Metadata Quickstart</a></span></dt><dd><dl><dt><span class="section"><a href="chap-Quickstart.html#sect-Quickstart-DesktopApps">4.1. For GUI application upstream maintainers</a></span></dt><dt><span class="section"><a href="sect-Quickstart-Addons.html">4.2. For upstream projects providing addons</a></span></dt><dt><span class="section"><a href="sect-Quickstart-Translation.html">4.3. Translating Metadata</a></span></dt></dl></dd><dt><span class="chapter"><a href="chap-AppStream-Services.html">5. Services</a></span></dt><dd><dl><dt><span class="section"><a href="chap-AppStream-Services.html#sect-AppStream-Services-Screenshots">5.1. Screenshot service</a></span></dt></dl></dd><dt><span class="chapter"><a href="chap-AppStream-ManualPages.html">6. Manual pages</a></span></dt><dt><span class="chapter"><a href="chap-LibAppStream-API.html">7. AppStream API Reference</a></span></dt><dt><span class="index"><a href="ix01.html">Index</a></span></dt></dl></div></div><ul class="docnav"><li class="previous"></li><li class="next"><a accesskey="n" href="chap-AppStream-About.html"><strong>Next</strong>Chapter 1. About AppStream</a></li></ul></body></html>
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