Introducing Usertrack: Drupal Module to Track User Login / Logout Status
As part of a recent project for the excellent Nolej Studios, I needed a way to track which Drupal users are currently logged in — this is surprisingly not really possible using the Drupal core, and even more surprisingly not supported by any contrib modules than I could identify.
The obvious solution was to code my own module, and here it is: usertrack. You can also check it out from Subversion at http://svn.triopter.com/drupal/usertrack/trunk/usertrack/ .
Usertrack includes simple Views integration for filtering, sorting, and annotating your User view with login status and last logout date. Please read the README for compatibility and installation notes.