Extension:Stale Pages

The Stale Pages extension add a new special page, Special:Stalepages, that lists pages that have not been edited in the last 270 days (by default). The number of days is configurable with the  setting.

Installation

 * 1) Download the latest snapshot and extract it to your extensions directory.
 * 2) Add  to LocalSettings.php
 * 3) The extension should be now active.