<section id="installed-applications">
<title>Installed Applications</title>
<para>
Keycloak provides two special redirect uris for installed applications.
</para>
<section id="installed-applications-url">
<title>http://localhost</title>
<para>
This returns the code to a web server on the client as a query parameter. Any port number is allowed.
This makes it possible to start a web server for the installed application on any free port number without
requiring changes in the <literal>Admin Console</literal>.
</para>
</section>
<section id="installed-applications-urn">
<title>urn:ietf:wg:oauth:2.0:oob</title>
<para>
If its not possible to start a web server in the client (or a browser is not available) it is possible to
use the special <literal>urn:ietf:wg:oauth:2.0:oob</literal> redirect uri. When this redirect uri is used
Keycloak displays a page with the code in the title and in a box on the page. The application can either
detect that the browser title has changed, or the user can copy/paste the code manually to the application.
With this redirect uri it is also possible for a user to use a different device to obtain a code to paste
back to the application.
</para>
</section>
</section>