It should come handy to keep track of your application crashes (crash? uh? My apps never crash! :-))
You can download it here.
Simply extract it on your webserver and edit config.php to adjust your settings.
It can work in two ways: if you’re installing it on the same server running mantis, set MANTIS_LOCAL to true and MANTIS_PATH to the root of your mantis installation.
Otherwise, you can even install it on a different server and let it communicate with your mantis via SOAP. In order to do this, set MANTIS_LOCAL to false and edit MANTIS_URL. This setup needs the SOAP extension of PHP5, so make sure it’s available.
Feedback is welcome, of course.