drydenmaker

<p>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.</p>


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.

ericjuden

<p>This plugin allows you to use $_COOKIE, $_SERVER, $_SESSION, $_GET, $_POST and $_REQUEST data in a Gravity Form through the merge tags of a field. I’ve only really tested this using a hidden field.</p>


Gravity Forms Extended Merge Tags

It's amazing how few people seem to know about this plugin. Incredibly simple, but also really helpful when using $_SESSION variables to track website visitors.
I use it to get referring website data, so I can easily store it in a $__SESSION variable. Then when the visitor fills out a Gravity Form, I can pass along the stored vars.
I crafted a Lead Source Tracking for Salesforce script that uses this plugin to pass along the details to Salesforce when a form is submitted.



Brilliantly simple

This plugin allows you to use $_COOKIE, $_SERVER, $_SESSION, $_GET, $_POST and $_REQUEST data in a Gravity Form through the merge tags of a field.

WP Passport vs Gravity Forms Extended Merge Tags