You can configure single logout in WSO2 App Manager to automatically sign out from all logged in apps, when you sign out from one.
Configuring WSO2 App Manager
To configure WSO2 App Manager for single logout, select Enable Single Logout in the Step 2 - Policies section of creating a Web app, and specify the logout URL of your app as shown below.
When persisting the logout URL, WSO2 App Manager converts it to a gateway URL by tallying it against the Web app URL. Therefore, you need to enter the complete logout URL starting with the Web app URL. For example, if your Web app URL is http://locahost:8080/MyWebapp, the enter the logout URL as follows: http://locahost:8080/MyWebapp/?action=logout.
Configuring the Web app
In the Web app, if you have any absolute references, in the logout URL, then WSO2 App Manager will directly invoke the Web app by-passing the gateway. Therefore, you need to configure the logout URL as a relative reference. For example, a sample logout link configuration with a relative reference on a JSP page, is as follows.
<li><a href=<% out.println(".?action=logout"); %>>Logout</a></li>