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%META:TOPICPARENT{name="AdminDocumentationCategory"}%
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---+ Add-Ons

Deprecated name for the [[System.Contribs]] type of extension.  Some older extensions will still be named as an !AddOn.

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---++ Overview

An add-on runs separately from the Foswiki scripts, e.g. for data import, export to static HTML, etc. Add-Ons normally do not call any Foswiki code directly, though may invoke Foswiki scripts. There are different types of add-ons, they may be stand alone scripts, browser plugins, office tool extensions, or even a set of topics that form a wiki application.

*See other types of extensions:* [[Contribs]], [[Plugins]], [[Skins]]

---++ Add-Ons Installed on this site

%SEARCH{ 
   "AddOn" 
   scope="topic" 
   topic="*AddOn" 
   nosearch="on" 
   format="   * [[$topic]]"
 }%

---++ Installing !AddOns

   * Use [[%SCRIPTURLPATH{"configure"}%]] to browse or search the list of extensions available from Foswiki.org, and to install the extension.
   * Or, use the =tools/extension_installer= script to download and install the extension.
   * Or, download an extension package from some other source, and unzip it.
   * Follow any special installation instructions in the !AddOn topic.

---++ Creating new Add-Ons

   * New extensions in this category should be created as a [[Contribs][Contrib]]. !AddOns are deprecated. Visit Foswiki:Development/ExtensionDeveloperGuide for more details.

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*Related Topics:* DeveloperDocumentationCategory, AdminDocumentationCategory
