Is there a web application which I can use for monitoring a web directory? I would like to use get a notification (RSS feed or email) when a new pdf file is added into this web directory.
If your webserver supports some scripting language (e.g. PHP), a simple script could create an RSS feed for you. You only need to be able to list the newest top N files in that folder.
Update: You can write some code to get the page you linked, and parse it to get the information you require, then build an RSS feed from that. Note that when indexing in that folder is disabled, it will no longer work.