Shadowtail is a Java/Spring framework for gathering numerical data (statistics) about a Java application. It is particularly useful as a source of data to feed Orca, the free tool for plotting textual data onto a directory on a Web server.
DirJack is a java written tool to monitor directories in your filesystem. The main feature is to react on changes within a directory i.e. you can define the behaviour what to do when files are added, edited or removed.
A client/server application designed to let the user monitor a directory
tree on a remote machine by creating snapshots of current file status in order
to later detect file modification, addition and/or removal.