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<abstract>
 <para>This chapter provides you with a comprehensive view about applications in Knowledge, including:</para>
    <itemizedlist>
      <listitem>
        <para>
          <emphasis role="bold">
            <link linkend="KSref.Applications.Portlets">Portlets</link>
          </emphasis> </para>
          <para>Details (package, portlet.xml, and portlet preferences) of all portlets used in Knowledge, including Forum, Answers, FAQ and Polls. </para>
      </listitem>
      <listitem>
        <para>
          <emphasis role="bold">
            <link linkend="KSref.Applications.Gadgets">Gadgets</link>
          </emphasis> </para>
          <para>Introduction to Poll Gadget, its preferences and links to used REST services. </para>
      </listitem>
    </itemizedlist>
  <para>These applications are packaged as Web application archives (WARs).
  </para>
  <para>Also, you can specify the package of each portlet and gadget and its available preferences that allow you to extend the configuration choices for standard preferences.
  </para>
</abstract>
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