drydenmaker

Places user information in the global session for use in other applications on the same domain. Currently used by a Crossley Framework (http://bit.ly/18hJsP) Auth module. When used, a unauthenticated user can request an application page outside WP that requires authentication. The module then forwards teh person to the WP Login page, which once authentication is finished, forwards the user back to the initial requested page. Then the application can peer into who the user is as far as WP is concerned and decide what to do from there.

WP Passport

Places user information in the global session for use in other applications on the same domain.  Currently used by a Crossley Framework (http://bit.

tronhammer

This plugin will mimic a keep-alive ping by utilizing jQuery to perform an ajax request to the current page, which will update 
the session token tied to PilotPress and or any other system attached using PHP built in sessions. Session Slap will also provide 
a settings interface to allow admins to configure details relating to interval amount (which is defauled to 5 minutes less than the 
session.maxlifetime set in php.ini).
A few notes about the sections above:
<ul>
<li>Configuration options are available in the Settings -> Session Slap menu.</li>
<li>Updates built in PHP sessions only.</li>
<li>Attempts to access session.maxlifetime ini settings, but will default to 24 minutes if not available.</li>
</ul>

Session Slap

Session Slap mimics a keepalive ping by making an AJAX request to the current page to refresh active session timestamp.

WP Passport vs Session Slap