Is it possible to get another Craft's webApp from within a Craft plugin controller I have two instances of Craft on the same server. From within a plugin controller in Craft #1, I want to be able to get entries from Craft #2. Can this be done and if so, how?
Indeed... this will do it:

$craft = require '../other/craft/app/bootstrap.php';
$entry = $craft-&gt;entries-&gt;getEntryById($id);

echo 'Other Craft install entry title:'.$entry-&gt;title;